av_log() patch by ("Steven M. Schultz" <sms at 2BSD dot COM>)

git-svn-id: file:///var/local/repositories/ffmpeg/trunk@2813 9553f0bf-9b14-0410-a0b8-cfaf0461ba5b

libavcodec/xvmcvideo.c

@@ -146,7 +146,7 @@ const int mb_xy = s->mb_y * s->mb_stride + s->mb_x;
 
 
     if(s->encoding){
-        fprintf(stderr,"XVMC doesn't support encoding!!!\n");
+        av_log(s->avctx, AV_LOG_ERROR, "XVMC doesn't support encoding!!!\n");
 	av_abort();
     }