Session management example doesn't compile due to syntax errors

[crsdrw]

The session-management example source code doesn't compile due to syntax errors:

$ go build session.go
# command-line-arguments
.\session.go:48:21: syntax error: unexpected newline, expecting comma or }
.\session.go:72:14: syntax error: unexpected newline, expecting comma or )
.\session.go:86:9: syntax error: unexpected else, expecting }
.\session.go:87:9: syntax error: unexpected {, expecting comma or )
.\session.go:93:5: syntax error: non-declaration statement outside function body
.\session.go:117:28: syntax error: unexpected newline, expecting comma or }