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res_pjsip_pubsub: Fix crash on destruction of empty subscription tree.

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If an old persistent subscription is recreated but then immediately
destroyed because it is out of date, the subscription tree will have no
leaf subscriptions on it. This was resulting in a crash when attempting
to destroy the subscription tree.

A simple NULL check fixes this problem.

Change-Id: I85570b9e2bcc7260a3fe0ad85904b2a9bf36d2ac
This commit is contained in:
Mark Michelson
2015-09-02 09:14:19 -05:00
committed by Richard Mudgett
parent ac0194dad6
commit 0b63d011c9
1 changed files with 4 additions and 0 deletions
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4
res/res_pjsip_pubsub.c
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@@ -1079,6 +1079,10 @@ static void destroy_subscriptions(struct ast_sip_subscription *root)
{
int i;
if (!root) {
return;
}
for (i = 0; i < AST_VECTOR_SIZE(&root->children); ++i) {
struct ast_sip_subscription *child;