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Add a check for c->head being NULL in pullup_free_context().

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This fixes crashes when an invalid filter chain is built
Patch by Alexander Strange % astrange A ithinksw P com %
Original thread:
date: Sep 7, 2007 8:47 PM	 
subject: [MPlayer-dev-eng] [PATCH] crash in pullup with invalid filters


git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@24370 b3059339-0415-0410-9bf9-f77b7e298cf2
This commit is contained in:
gpoirier 2007-09-08 14:43:10 +00:00
parent a85effae4f
commit a7aae21ad0
1 changed files with 1 additions and 0 deletions
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1
libmpcodecs/pullup.c
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@ -795,6 +795,7 @@ void pullup_free_context(struct pullup_context *c)
free(c->buffers);
f = c->head;
do {
if (!f) break;
free(f->diffs);
free(f->comb);
f = f->next;