Remove error raising when explicitely skipping frame

patch by Carl Eugen Hoyos: [cehoyos ag or at]
original thread:
[FFmpeg-devel] [PATCH] Don't let ctx->skip_frame>0 produce errors
date: 08/30/2007 01:30 PM

Originally committed as revision 10286 to svn://svn.ffmpeg.org/ffmpeg/trunk

libavcodec/h264.c

@@ -7968,6 +7968,7 @@ static int decode_frame(AVCodecContext *avctx,
         return -1;
 
     if(!(s->flags2 & CODEC_FLAG2_CHUNKS) && !s->current_picture_ptr){
+        if (avctx->skip_frame >= AVDISCARD_NONREF || s->hurry_up) return 0;
         av_log(avctx, AV_LOG_ERROR, "no frame!\n");
         return -1;
     }