tweak

git-svn-id: http://svn.freeswitch.org/svn/freeswitch/trunk@15362 d0543943-73ff-0310-b7d9-9358b9ac24b2

src/switch_cpp.cpp

@@ -568,7 +568,9 @@ SWITCH_DECLARE(void) CoreSession::hangupState(void)
 {
 	sanity_check_noreturn;	
 	this->begin_allow_threads();
-	switch_core_session_hangup_state(session);
+	if (switch_channel_down(channel)) {
+		switch_core_session_hangup_state(session);
+	}
 	this->end_allow_threads();
 }