Fixup some pthread_t checking in channels

git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@2438 65c4cc65-6c06-0410-ace0-fbb531ad65f3

channels/chan_h323.c

@@ -1271,7 +1271,7 @@ static int restart_monitor(void)
 		ast_log(LOG_WARNING, "Cannot kill myself\n");
 		return -1;
 	}
-	if (monitor_thread && (monitor_thread != AST_PTHREADT_STOP)) {
+	if (monitor_thread && (monitor_thread != AST_PTHREADT_NULL)) {
 		/* Wake up the thread */
 		pthread_kill(monitor_thread, SIGURG);
 	} else {

channels/chan_mgcp.c

@@ -2569,7 +2569,7 @@ static int restart_monitor(void)
 		ast_log(LOG_WARNING, "Cannot kill myself\n");
 		return -1;
 	}
-	if (monitor_thread) {
+	if (monitor_thread != AST_PTHREADT_NULL) {
 		/* Wake up the thread */
 		pthread_kill(monitor_thread, SIGURG);
 	} else {

channels/chan_sip.c

@@ -5829,7 +5829,7 @@ static int restart_monitor(void)
 		ast_log(LOG_WARNING, "Cannot kill myself\n");
 		return -1;
 	}
-	if (monitor_thread) {
+	if (monitor_thread != AST_PTHREADT_NULL) {
 		/* Wake up the thread */
 		pthread_kill(monitor_thread, SIGURG);
 	} else {

channels/chan_skinny.c

@@ -2426,7 +2426,7 @@ static int restart_monitor(void)
 		ast_log(LOG_WARNING, "Cannot kill myself\n");
 		return -1;
 	}
-	if (monitor_thread) {
+	if (monitor_thread != AST_PTHREADT_NULL) {
 		/* Wake up the thread */
 		pthread_kill(monitor_thread, SIGURG);
 	} else {

channels/chan_vofr.c

@@ -1008,7 +1008,7 @@ static int restart_monitor(void)
 		ast_log(LOG_WARNING, "Cannot kill myself\n");
 		return -1;
 	}
-	if (monitor_thread) {
+	if (monitor_thread != AST_PTHREADT_NULL) {
 		/* Wake up the thread */
 		pthread_kill(monitor_thread, SIGURG);
 	} else {

channels/chan_zap.c

@@ -5182,7 +5182,7 @@ static int restart_monitor(void)
 		ast_log(LOG_WARNING, "Cannot kill myself\n");
 		return -1;
 	}
-	if (monitor_thread) {
+	if (monitor_thread != AST_PTHREADT_NULL) {
 		/* Just signal it to be sure it wakes up */
 #if 0
 		pthread_cancel(monitor_thread);