Merge commit '252c0bfd'

* commit '252c0bfd':
  lavc: Fix msvc compilation of utils.c with -WX (warnings treated as errors)
Merged-by: Michael Niedermayer <michaelni@gmx.at>

libavcodec/utils.c

@@ -888,6 +888,7 @@ void avcodec_default_release_buffer(AVCodecContext *s, AVFrame *pic)
 int avcodec_default_reget_buffer(AVCodecContext *s, AVFrame *pic)
 {
     av_assert0(0);
+    return AVERROR_BUG;
 }
 #endif