Glenn Randers-Pehrson 1faa6ff32c [libpng17] Handle zero-length PLTE chunk or NULL palette with png_error() ...

instead of png_chunk_report(), which by default issues a warning
rather than an error, leading to later reading from a NULL pointer
(png_ptr->palette) in png_do_expand_palette().

2013-12-15 08:47:52 -06:00

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