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We should only unsubscribe to the device state event

Browse Source 
subscription if we have previously subscribed. Otherwise
a segfault will occur.

(closes issue #13476)
Reported by: jonnt
Patches:
      13476.patch uploaded by putnopvut (license 60)
Tested by: jonnt



git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@143609 65c4cc65-6c06-0410-ace0-fbb531ad65f3
This commit is contained in:
Mark Michelson
2008-09-19 15:43:28 +00:00
parent 12073c2a96
commit 02a0855e57
1 changed files with 3 additions and 1 deletions
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4
channels/chan_agent.c
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@@ -2535,7 +2535,9 @@ static int unload_module(void)
/* First, take us out of the channel loop */
ast_channel_unregister(&agent_tech);
/* Delete devicestate subscription */
agent_devicestate_sub = ast_event_unsubscribe(agent_devicestate_sub);
if (agent_devicestate_sub) {
agent_devicestate_sub = ast_event_unsubscribe(agent_devicestate_sub);
}
/* Unregister dialplan functions */
ast_custom_function_unregister(&agent_function);
/* Unregister CLI commands */