Prevent negative expire parameter in HEXPIRE/HEXPIREAT/HPEXPIRE/HPEXPIREAT commands (#13310)
1. Don't allow HEXPIRE/HEXPIREAT/HPEXPIRE/HPEXPIREAT command expire
parameters is negative
2. Remove a dead code reported from Coverity.
when `unit` is not `UNIT_SECONDS`, the second `if (expire > (long long)
EB_EXPIRE_TIME_MAX)` will be dead code.
```c
# t_hash.c
2988 /* Check expire overflow */
cond_at_most: Condition expire > 281474976710655LL, taking false branch. Now the value of expire is at most 281474976710655.
2989 if (expire > (long long) EB_EXPIRE_TIME_MAX) {
2990 addReplyErrorExpireTime(c);
2991 return;
2992 }
2994 if (unit == UNIT_SECONDS) {
2995 if (expire > (long long) EB_EXPIRE_TIME_MAX / 1000) {
2996 addReplyErrorExpireTime(c);
2997 return;
2998 }
2999 expire *= 1000;
3000 } else {
at_most: At condition expire > 281474976710655LL, the value of expire must be at most 281474976710655.
dead_error_condition: The condition expire > 281474976710655LL cannot be true.
3001 if (expire > (long long) EB_EXPIRE_TIME_MAX) {
CID 494223: (#1 of 1): Logically dead code (DEADCODE)
dead_error_begin: Execution cannot reach this statement: addReplyErrorExpireTime(c);.
3002 addReplyErrorExpireTime(c);
3003 return;
3004 }
3005 }
```
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Co-authored-by:
Ozan Tezcan <ozantezcan@gmail.com>
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