Making sure muc members get recorded.

This is an upstream of a change I made; will describe in a separate
email thread.

Essentially, the members map wasn't getting populated in the callclient
example, so it was always empty. Now it will be populated correctly.

R=henrike@webrtc.org

Review URL: https://webrtc-codereview.appspot.com/13189004

git-svn-id: http://webrtc.googlecode.com/svn/trunk@6950 4adac7df-926f-26a2-2b94-8c16560cd09d

talk/examples/call/callclient.cc

@@ -1285,8 +1285,9 @@ void CallClient::OnMucStatusUpdate(const buzz::Jid& jid,
     return;
   }
 
-  if (!status.available()) {
-    // Remove them from the room.
+  if (status.available()) {
+    muc->members()[status.jid().resource()] = status;
+  } else {
     muc->members().erase(status.jid().resource());
   }
 }