Merge commit 'f4bd9fe3'

* commit 'f4bd9fe3':
  h264: fix clang warning about uninitialized variable
Merged-by: Michael Niedermayer <michaelni@gmx.at>

libavcodec/h264_refs.c

@@ -552,7 +552,7 @@ static int check_opcodes(MMCO *mmco1, MMCO *mmco2, int n_mmcos)
 int ff_generate_sliding_window_mmcos(H264Context *h, int first_slice)
 {
     MMCO mmco_temp[MAX_MMCO_COUNT], *mmco = first_slice ? h->mmco : mmco_temp;
-    int mmco_index = 0, i;
+    int mmco_index = 0, i = 0;
 
     if (h->short_ref_count &&
         h->long_ref_count + h->short_ref_count >= h->sps.ref_frame_count &&