Fix network module calls

These calls really should be network module calls, so this fixed
NETWORKMODULECALL() to again silently do nothing if the network is NULL.

Signed-off-by: Uli Schlachter <psychon@znc.in>

ClientCommand.cpp

@@ -25,7 +25,7 @@ void CClient::UserCommand(CString& sLine) {
 		return;
 	}
 
-	USERMODULECALL(OnStatusCommand(sLine), m_pUser, this, return);
+	NETWORKMODULECALL(OnStatusCommand(sLine), m_pUser, m_pNetwork, this, return);
 
 	const CString sCommand = sLine.Token(0);