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app: fix #8230 crash in gimp_layer_invalidate_boundary when channel is NULL

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gimp_channel_is_empty returns FALSE if channel is NULL. This causes
gimp_layer_invalidate_boundary to crash if the mask channel is NULL.

With a NULL channel gimp_channel_is_empty should return TRUE, just like
the similar gimp_image_is_empty does, because returning FALSE here
suggests we have a non empty channel.

(cherry picked from commit 22af0bcfe6)
This commit is contained in:
Jacob Boerema
2022-06-05 15:38:24 -04:00
parent 5f4eea011b
commit 6ab90ecbbd
1 changed files with 1 additions and 1 deletions
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2
app/core/gimpchannel.c
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@ -1824,7 +1824,7 @@ gimp_channel_boundary (GimpChannel *channel,
gboolean
gimp_channel_is_empty (GimpChannel *channel)
{
g_return_val_if_fail (GIMP_IS_CHANNEL (channel), FALSE);
g_return_val_if_fail (GIMP_IS_CHANNEL (channel), TRUE);
return GIMP_CHANNEL_GET_CLASS (channel)->is_empty (channel);
}