no timers with 0 interval

git-svn-id: http://svn.freeswitch.org/svn/freeswitch/trunk@11280 d0543943-73ff-0310-b7d9-9358b9ac24b2

src/switch_time.c

@@ -238,7 +238,7 @@ static switch_status_t timer_init(switch_timer_t *timer)
 		}
 	}
 
-	if (globals.RUNNING != 1 || !globals.mutex) {
+	if (globals.RUNNING != 1 || !globals.mutex || timer->interval < 1) {
 		return SWITCH_STATUS_FALSE;
 	}
 
@@ -255,7 +255,7 @@ static switch_status_t timer_init(switch_timer_t *timer)
 		private_info->roll = TIMER_MATRIX[timer->interval].roll;
 		private_info->ready = 1;
 
-		if (timer->interval < MS_PER_TICK) {
+		if (timer->interval > 0 && timer->interval < MS_PER_TICK) {
 			MS_PER_TICK = timer->interval;
 		}