Ronald S. Bultje 0f88b3f82f videodsp: fix 1-byte overread in top/bottom READ_NUM_BYTES iterations.
This can overread (either before start or beyond end) of the buffer in
Nx1 (i.e. height=1) images.

Fixes mozilla bug 1240080.
2016-01-18 11:12:47 -05:00
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