remove compile warning

This patch just removes the following build warning messages:
```c
    CC dict.o
    CC redis.o
redis.c: In function ‘genRedisInfoString’:
redis.c:1967:13: warning: format ‘%llx’ expects argument of type ‘long long unsigned int’, but argument 6 has type ‘uint64_t’ [-Wformat]
redis.c: In function ‘version’:
redis.c:2505:9: warning: format ‘%llx’ expects argument of type ‘long long unsigned int’, but argument 7 has type ‘uint64_t’ [-Wformat]
    CC sds.o
    CC zmalloc.o
```

and now
```c
    CC dict.o
    CC redis.o
    CC sds.o
    CC zmalloc.o
```