[libpng16] Fixed previous bugfix to work on 64-bit platforms.

This commit is contained in:
John Bowler 2013-04-13 16:52:09 -05:00 committed by Glenn Randers-Pehrson
parent 9bb775fc8c
commit 70eb0720a0

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@ -1745,9 +1745,13 @@ png_write_iTXt(png_structrp png_ptr, int compression, png_const_charp key,
{
if (comp.input_len > PNG_UINT_31_MAX-prefix_len)
png_error(png_ptr, "iTXt: uncompressed text too long");
png_write_chunk_header(png_ptr, png_iTXt, strlen(text) + prefix_len);
/* So the string will fit in a chunk: */
comp.output_len = (png_uint_32)/*SAFE*/comp.input_len;
}
png_write_chunk_header(png_ptr, png_iTXt, comp.output_len + prefix_len);
png_write_chunk_data(png_ptr, new_key, key_len);
png_write_chunk_data(png_ptr, (png_const_bytep)lang, lang_len);