removed warning

Originally committed as revision 1506 to svn://svn.ffmpeg.org/ffmpeg/trunk

libavcodec/utils.c

@@ -24,8 +24,6 @@ void *av_mallocz(unsigned int size)
 {
     void *ptr;
     
-    if(size == 0) fprintf(stderr, "Warning, allocating 0 bytes\n");
-    
     ptr = av_malloc(size);
     if (!ptr)
         return NULL;