Fix Lua compile warning on GCC 12.1 (#11115)
Fix Lua compile warning on GCC 12.1 (#11115)

Fix Lua compile warning on GCC 12.1

GCC 12.1 prints a warning on compile: 
```
ldump.c: In function ‘DumpString’:
ldump.c:63:26: warning: the comparison will always evaluate as ‘false’ for the pointer operand in ‘s + 24’ must not be NULL [-Waddress]
   63 |  if (s==NULL || getstr(s)==NULL)

```

It seems correct, `getstr(s)` can't be `NULL`.  
Also, I see Lua v5.2 does not have that check: https://github.com/lua/lua/blob/v5-2/ldump.c#L63
soloestoy/redis,charsyam/redis,soloestoy/redis,charsyam/redis,charsyam/redis,charsyam/redis,charsyam/redis,soloestoy/redis,soloestoy/redis,soloestoy/redis