From: Joshua Colp <jcolp@digium.com>
Date: Wed, 27 Feb 2008 15:52:02 +0000 (+0000)
Subject: Only stop the MWI monitor thread if it was actually started.
X-Git-Tag: 1.4.19~134
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=bb7aa0e4bc02d5e8f1cfd0dc2a8d3ff32927ecc0;p=thirdparty%2Fasterisk.git

Only stop the MWI monitor thread if it was actually started.
(closes issue #12086)
Reported by: francesco_r


git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/1.4@104536 65c4cc65-6c06-0410-ace0-fbb531ad65f3
---

diff --git a/res/res_smdi.c b/res/res_smdi.c
index 87a4dd49d2..9315cf9732 100644
--- a/res/res_smdi.c
+++ b/res/res_smdi.c
@@ -1281,7 +1281,9 @@ static int unload_module(void)
 	ast_cond_signal(&mwi_monitor.cond);
 	ast_mutex_unlock(&mwi_monitor.lock);
 
-	pthread_join(mwi_monitor.thread, NULL);
+	if (mwi_monitor.thread != AST_PTHREADT_NULL) {
+		pthread_join(mwi_monitor.thread, NULL);
+	}
 
 	ast_custom_function_unregister(&smdi_msg_retrieve_function);
 	ast_custom_function_unregister(&smdi_msg_function);