Remove unneeded check

git-svn-id: file:///var/local/repositories/ffmpeg/trunk@13928 9553f0bf-9b14-0410-a0b8-cfaf0461ba5b

libavcodec/ra144.c

@@ -195,7 +195,6 @@ static unsigned int rms(const int *data)
         data++;
     }
 
-    if (res > 0)
         res = t_sqrt(res);
 
     res >>= (b + 10);