diff options
Diffstat (limited to 'generic/tkImgPhoto.c')
| -rw-r--r-- | generic/tkImgPhoto.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/generic/tkImgPhoto.c b/generic/tkImgPhoto.c index fcb6d2f..7fa894c 100644 --- a/generic/tkImgPhoto.c +++ b/generic/tkImgPhoto.c @@ -2075,6 +2075,9 @@ ToggleComplexAlphaIfNeeded( */ mPtr->flags &= ~COMPLEX_ALPHA; + if (c == NULL) { + return 0; + } c += 3; /* Start at first alpha byte. */ for (; c < end; c += 4) { if (*c && *c != 255) { |