antirez/redis — pull request #2209 by charsyam (2014-12-12 12:57:13+00:00)
Title: remove_warning in db.c

just remove some compile warning.

before
```c
db.c: In function ‘scanGenericCommand’:
db.c:419: warning: ‘patlen’ may be used uninitialized in this function
db.c:418: warning: ‘pat’ may be used uninitialized in this function
```