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Merge branch 'fix-png-get-trns' into 'master'

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Fix potential crash in PNG_Read

See merge request KartKrew/Kart!917
This commit is contained in:
James R 2023-02-12 14:22:24 +00:00
commit 437944927e
1 changed files with 1 additions and 3 deletions
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4
src/r_picformats.c
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@ -999,9 +999,7 @@ static png_bytep *PNG_Read(
// color is present on the image, the palette flag is disabled.
if (usepal)
{
png_get_tRNS(png_ptr, png_info_ptr, &trans, &trans_num, &trans_values);
if (trans && trans_num > 0)
if (png_get_tRNS(png_ptr, png_info_ptr, &trans, &trans_num, &trans_values) == PNG_INFO_tRNS)
{
INT32 i;
for (i = 0; i < trans_num; i++)