We should only unsubscribe to the device state event
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
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@ -2535,7 +2535,9 @@ static int unload_module(void)
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/* First, take us out of the channel loop */
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ast_channel_unregister(&agent_tech);
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/* Delete devicestate subscription */
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agent_devicestate_sub = ast_event_unsubscribe(agent_devicestate_sub);
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if (agent_devicestate_sub) {
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agent_devicestate_sub = ast_event_unsubscribe(agent_devicestate_sub);
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}
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/* Unregister dialplan functions */
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ast_custom_function_unregister(&agent_function);
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/* Unregister CLI commands */
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