move m_bMultiplayer conditional into GameState

stepmania/src/GameState.cpp

@@ -660,7 +660,7 @@ void GameState::CommitStageStats()
 {
 	if( m_bDemonstrationOrJukebox )
 		return;
-	if( GAMESTATE->m_bMultiplayer )
+	if( m_bMultiplayer )
 		return;
 
 	STATSMAN->CommitStatsToProfiles( &STATSMAN->m_CurStageStats );

stepmania/src/ScreenGameplay.cpp

@@ -2346,9 +2346,7 @@ void ScreenGameplay::StageFinished( bool bBackedOut )
 		STATSMAN->m_CurStageStats.m_player[pn].CalcAwards( pn, STATSMAN->m_CurStageStats.m_bGaveUp, STATSMAN->m_CurStageStats.m_bUsedAutoplay );
 	STATSMAN->m_CurStageStats.CommitScores( false );
 	
-	// no saved stats in multiplayer
-	if( !GAMESTATE->m_bMultiplayer )
-		GAMESTATE->CommitStageStats();
+	GAMESTATE->CommitStageStats();
 
 	// save current stage stats
 	STATSMAN->m_vPlayedStageStats.push_back( STATSMAN->m_CurStageStats );