Ronald S. Bultje 6e13c30a8f vp9: don't overread by 4 pixels in ff_vp9_avg4_mmxext().
If the block is at the end of the allocated buffer and there is no
padding, this will over-read, which may cause crashes. Reported by
Firefox.
2022-06-01 14:31:32 -04:00
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