Request Osmux CID and forward it in Assign Req and Assign Compl

Related: OS#2551
Depends: osmo-mgw.git I73b4c62baf39050da81d65553cbea07bc51163de
Change-Id: I5b14e34481e890669c9ee02dba81eba84293cebb
diff --git a/include/osmocom/msc/call_leg.h b/include/osmocom/msc/call_leg.h
index d8380f5..f35816c 100644
--- a/include/osmocom/msc/call_leg.h
+++ b/include/osmocom/msc/call_leg.h
@@ -44,6 +44,8 @@
 
 	/* Prevent events from deallocating for certain release code paths, to prevent use-after-free problems. */
 	bool deallocating;
+
+	bool ran_peer_supports_osmux;
 };
 
 enum call_leg_event {