Release the router lock before checking each reroute buffer to avoid deadlocks.

git-svn-id: http://voip.null.ro/svn/yate@3727 acf43c95-373e-0410-b603-e72c3f656dc1

libs/ysig/router.cpp

@@ -674,6 +674,7 @@ void SS7Router::timerTick(const Time& when)
 	    m_trafficOk.stop();
 	    silentAllow();
 	}
+	mylock.drop();
 	rerouteCheck(when);
 	return;
     }