Describe the bug

[email@mail5 ~]$ maddy-git imap-msgs list <email address> INBOX
panic: runtime error: invalid memory address or nil pointer dereference
[signal SIGSEGV: segmentation violation code=0x1 addr=0x30 pc=0x9ebdbe]

goroutine 24 [running]:
github.com/foxcpp/go-imap-mess.(*MailboxHandle).ResolveSeq(0x0, 0xe8?, 0xc000241bf0)
        /home/cbrake/go/pkg/mod/github.com/foxcpp/go-imap-mess@v0.0.0-20220105225909-b3469f4a4315/mailbox.go:50 +0x5e
github.com/foxcpp/go-imap-sql.(*Mailbox).ListMessages(0xc000259920, 0x0, 0xc000241bf0, {0xc0002d3180?, 0x5, 0x5}, 0xc000259980)
        /home/cbrake/go/pkg/mod/github.com/foxcpp/go-imap-sql@v0.5.1-0.20220623181604-c20be1a387b4/fetch.go:50 +0x555
github.com/foxcpp/maddy/internal/cli/ctl.msgsList.func1()
        /home/cbrake/maddy/internal/cli/ctl/imap.go:733 +0xf2
created by github.com/foxcpp/maddy/internal/cli/ctl.msgsList
        /home/cbrake/maddy/internal/cli/ctl/imap.go:732 +0x38f

Steps to reproduce

See above.

Using sqlite db.

Configuration file

## Maddy Mail Server - default configuration file (2021-08-16)
# Suitable for small-scale deployments. Uses its own format for local users DB,
# should be managed via maddyctl utility.
#
# See tutorials at https://maddy.email for guidance on typical
# configuration changes.
#
# See manual pages (also available at https://maddy.email) for reference
# documentation.

# ----------------------------------------------------------------------------
# Base variables

$(hostname) = <deleted>
$(primary_domain) = <deleted>
$(local_domains) = $(primary_domain) <deleted>

tls file <deleted>

# ----------------------------------------------------------------------------
# Local storage & authentication

# pass_table provides local hashed passwords storage for authentication of
# users. It can be configured to use any "table" module, in default
# configuration a table in SQLite DB is used.
# Table can be replaced to use e.g. a file for passwords. Or pass_table module
# can be replaced altogether to use some external source of credentials (e.g.
# PAM, /etc/shadow file).
#
# If table module supports it (sql_table does) - credentials can be managed
# using 'maddyctl creds' command.

auth.pass_table local_authdb {
    table sql_table {
        driver sqlite3
        dsn credentials.db
        table_name passwords
    }
}

# imapsql module stores all indexes and metadata necessary for IMAP using a
# relational database. It is used by IMAP endpoint for mailbox access and
# also by SMTP & Submission endpoints for delivery of local messages.
#
# IMAP accounts, mailboxes and all message metadata can be inspected using
# imap-* subcommands of maddyctl utility.

storage.imapsql local_mailboxes {
    driver sqlite3
    dsn imapsql.db
}

# ----------------------------------------------------------------------------
# SMTP endpoints + message routing

hostname $(hostname)

table.chain local_rewrites {
    optional_step regexp "(.+)\+(.+)@(.+)" "$1@$3"
    optional_step static {
        entry postmaster postmaster@$(primary_domain)
    }
    optional_step file /etc/maddy/aliases
}

msgpipeline local_routing {
    # Insert handling for special-purpose local domains here.
    # e.g.
    # destination lists.example.org {
    #     deliver_to lmtp tcp://127.0.0.1:8024
    # }

    destination postmaster $(local_domains) {
        modify {
            replace_rcpt &local_rewrites
        }

        deliver_to &local_mailboxes
    }

    default_destination {
        reject 550 5.1.1 "User doesn't exist"
    }
}

smtp tcp://0.0.0.0:25 {
    limits {
        # Up to 20 msgs/sec across max. 10 SMTP connections.
        all rate 20 1s
        all concurrency 10
    }

    dmarc yes
    check {
      require_mx_record
      dkim
      spf {
        debug no
        enforce_early no
        none_action ignore
        neutral_action ignore
        fail_action quarantine
        softfail_action ignore
        permerr_action quarantine
        temperr_action quarantine
      }
    }

    source $(local_domains) {
        reject 501 5.1.8 "Use Submission for outgoing SMTP"
    }
    default_source {
        destination postmaster $(local_domains) {
            deliver_to &local_routing
        }
        default_destination {
            reject 550 5.1.1 "User doesn't exist"
        }
    }
}

submission tls://0.0.0.0:465 tcp://0.0.0.0:587 {
    limits {
        # Up to 50 msgs/sec across any amount of SMTP connections.
        all rate 50 1s
    }

    auth &local_authdb

    source $(local_domains) {
        check {
            authorize_sender {
                prepare_email &local_rewrites
                user_to_email identity
            }
        }

        destination postmaster $(local_domains) {
            deliver_to &local_routing
        }
        default_destination {
            modify {
                dkim $(primary_domain) $(local_domains) default
            }
            deliver_to &remote_queue
        }
    }
    default_source {
        reject 501 5.1.8 "Non-local sender domain"
    }
}

target.remote outbound_delivery {
    limits {
        # Up to 20 msgs/sec across max. 10 SMTP connections
        # for each recipient domain.
        destination rate 20 1s
        destination concurrency 10
    }
    mx_auth {
        dane
        mtasts {
            cache fs
            fs_dir mtasts_cache/
        }
        local_policy {
            min_tls_level none
            min_mx_level none
        }
    }
}

target.queue remote_queue {
    target &outbound_delivery

    autogenerated_msg_domain $(primary_domain)
    bounce {
        destination postmaster $(local_domains) {
            deliver_to &local_routing
        }
        default_destination {
            reject 550 5.0.0 "Refusing to send DSNs to non-local addresses"
        }
    }
}

# ----------------------------------------------------------------------------
# IMAP endpoints

imap tls://0.0.0.0:993 tcp://0.0.0.0:143 {
    auth &local_authdb
    storage &local_mailboxes
}

Environment information

built from source, bbaea0400e5c89835ca6d04f0f84c036e9a3922a, tag v0.6.1

foxcpp / maddy

maddy imap-msgs list crashes #509

Describe the bug

Steps to reproduce

Configuration file

Environment information