Fix getting host jid after 0a455fbe2d

During the removal of glooxwrapper the function GetJID was mapped to
getID. This results in NetClient querying for host jid not getting the
right value which prevents hosting a game in the lobby.

Reported-by: Dunedan
Refs: #7203
Signed-off-by: Ralph Sennhauser <ralph.sennhauser@gmail.com>

source/lobby/XmppClient.cpp

@@ -1206,7 +1206,7 @@ std::string XmppClient::GetNick() const
 
 std::string XmppClient::GetJID() const
 {
-	return m_client->getID();
+	return m_client->jid().full();
 }
 
 /**