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fix double free

This commit is contained in:
Brad Parker 2018-08-18 00:51:07 -04:00
parent 1d4cb967f0
commit fbe08aa0c5
1 changed files with 5 additions and 0 deletions
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5
libretro-common/formats/png/rpng.c
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@ -544,6 +544,7 @@ static int png_reverse_filter_init(const struct png_ihdr *ihdr,
if (pngp->pass_size > pngp->total_out)
{
free(pngp->data);
pngp->data = NULL;
return -1;
}
@ -721,6 +722,7 @@ static int png_reverse_filter_adam7_iterate(uint32_t **data_,
free(pngp->data);
pngp->data = NULL;
pngp->pass_width = 0;
pngp->pass_height = 0;
pngp->pass_size = 0;
@ -746,7 +748,10 @@ static int png_reverse_filter_adam7(uint32_t **data_,
return 0;
case IMAGE_PROCESS_ERROR:
if (pngp->data)
{
free(pngp->data);
pngp->data = NULL;
}
pngp->inflate_buf -= pngp->adam7_restore_buf_size;
pngp->adam7_restore_buf_size = 0;
return -1;