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avcodec/h264_mc_template: prefetch list1 only if it is used in the MB 

Fixes ubsan warning
Fixes Mozilla bug 1230276

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer 2015-12-18 00:20:51 +01:00
parent ef8f6464a5
commit c8ea57664f
1 changed files with 2 additions and 1 deletions
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3
libavcodec/h264_mc_template.c
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@ -158,6 +158,7 @@ static void MCFUNC(hl_motion)(const H264Context *h, H264SliceContext *sl,
}
}
prefetch_motion(h, sl, 1, PIXEL_SHIFT, CHROMA_IDC);
if (USES_LIST(mb_type, 1))
prefetch_motion(h, sl, 1, PIXEL_SHIFT, CHROMA_IDC);
}