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864270e18f
Fixed a memory overwrite bug in simplified read of RGB PNG with non-linear gamma Also bugs in the error checking in pngread.c and changed quite a lot of the checks in pngstest.c to be correct; either correctly written or not over-optimistic. The pngstest changes are insufficient to allow all possible RGB transforms to be passed; pngstest cmppixel needs to be rewritten to make it clearer which errors it allows and then changed to permit known inaccuracies.