fix cases where prefs aren't persisted in case of power loss

stepmania/src/ScreenManager.cpp

@@ -587,6 +587,8 @@ retry:
 		SAFE_DELETE( pNewScreen );
 		goto retry;
 	}
+	
+	bool bWasOnSystemMenu = GAMESTATE->m_bIsOnSystemMenu;
 
 	/* If this is a system menu, don't let the operator key touch it! 
 		However, if you add an options screen, please include it here -- Miryokuteki */
@@ -603,6 +605,10 @@ retry:
 		GAMESTATE->m_bIsOnSystemMenu = true;
 	else 
 		GAMESTATE->m_bIsOnSystemMenu = false;
+	
+	// If we're exiting a system menu, persist settings in case we don't exit normally
+	if( bWasOnSystemMenu && !GAMESTATE->m_bIsOnSystemMenu )
+		PREFSMAN->SaveGlobalPrefsToDisk();
 
 	LOG->Trace("... SetFromNewScreen");
 	SetFromNewScreen( pNewScreen, false );

stepmania/src/StepMania.cpp

@@ -243,9 +243,11 @@ void ResetGame( bool ReturnToFirstScreen )
 			SCREENMAN->SetNewScreen( FIRST_RUN_INITIAL_SCREEN );
 		else
 			SCREENMAN->SetNewScreen( INITIAL_SCREEN );
+
+		PREFSMAN->m_bFirstRun = false;
+		PREFSMAN->SaveGlobalPrefsToDisk();	// persist FirstRun setting in case we don't exit normally
 	}
 
-	PREFSMAN->m_bFirstRun = false;
 }
 
 static void GameLoop();