Crash prevention
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@ -2744,7 +2744,7 @@ static png_bytep *PNG_Read(UINT8 *png, UINT16 *w, UINT16 *h, INT16 *topoffset, I
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png_read_image(png_ptr, row_pointers);
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// Read grAB chunk
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if (topoffset || leftoffset)
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if ((topoffset || leftoffset) && (chunk.data != NULL))
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{
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INT32 *offsets = (INT32 *)chunk.data;
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