fix monitor thread. Bug #726

git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@1976 65c4cc65-6c06-0410-ace0-fbb531ad65f3

diff --git a/channels/chan_zap.c b/channels/chan_zap.c
index 56ccea1..80e4fec 100755 (executable)
--- a/channels/chan_zap.c
+++ b/channels/chan_zap.c
@@ -7048,7 +7048,7 @@ static int __unload_module(void)
                return -1;
        }
        if (!ast_mutex_lock(&monlock)) {
                return -1;
        }
        if (!ast_mutex_lock(&monlock)) {

-               if (monitor_thread) {
+               if (monitor_thread && (monitor_thread != -2)) {

                        pthread_cancel(monitor_thread);
                        pthread_kill(monitor_thread, SIGURG);
                        pthread_join(monitor_thread, NULL);
                        pthread_cancel(monitor_thread);
                        pthread_kill(monitor_thread, SIGURG);
                        pthread_join(monitor_thread, NULL);