Corrected negative seeks#4101
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radarhere merged 1 commit intopython-pillow:masterfrom Sep 30, 2019
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In RawDecode.c, throw an error if
skipis calculated to be less than zero. It is intended to skip padding between lines, not to go backwards.Unrelated to that, but with the same idea, in PsdImagePlugin, if the
combinedsizes of the individual parts is larger than the declaredsizeof the extra data field, then it looks for the next layer by seeking backwards. This is corrected by seeking to (the start of the layer + the size of the extra data field) instead of (the read parts of the layer + the rest of the layer).