Null deref in xRedisClient::command_status

[nimeshamin]

After latest pull after a few months, I'm getting a null deref in bool xRedisClient::command_status(const RedisDBIdx& dbi, const char* cmd, ...).

reply->str is null, which gets hit because CheckReply is returning true.

Reply structure:

• reply 0x00007fffe0002430 {2} redisReply type 2 int integer 0 long long len 0 int str 0x0000000000000000 char elements 1 size_t
• element 0x00007fffe0001ed0 {0x00007fffe00018d0} redisReply **
• _element 0x00007fffe00018d0 {3} redisReply type 3 int integer 0 long long len 0 int str 0x0000000000000000 char elements 0 sizet element 0x0000000000000000 redisReply *

[nimeshamin]

I think I see what it is, though, I need to review the previous change to this file a bit more to be sure of the expected behavior for the change. The added check for status should be preceded by a pointer check though, at very least

[nimeshamin]

Fixed