The big NULL replacement party part 2.

This may take a bit. Trying to do this by operator/command.

src/ScreenMessage.cpp

@@ -21,7 +21,7 @@ static map<RString, ScreenMessage> *m_pScreenMessages;
 
 ScreenMessage ScreenMessageHelpers::ToScreenMessage( const RString &sName )
 {
-	if( m_pScreenMessages == NULL )
+	if( m_pScreenMessages == nullptr )
 		m_pScreenMessages = new map<RString, ScreenMessage>;
 
 	if( m_pScreenMessages->find( sName ) == m_pScreenMessages->end() )