add missing header

stepmania/src/ScoreKeeperMAX2.cpp

@@ -19,6 +19,7 @@
 #include "GameState.h"
 #include "Course.h"
 #include "UnlockSystem.h"
+#include "SDL_utils.h"
 
 
 ScoreKeeperMAX2::ScoreKeeperMAX2( const vector<Notes*>& apNotes_, PlayerNumber pn_ ):

stepmania/src/ScreenGameplay.cpp

@@ -38,6 +38,7 @@
 #include "ActorUtil.h"
 #include "NoteSkinManager.h"
 #include "RageTextureManager.h"
+#include "RageSoundManager.h"
 #include "CombinedLifeMeterEnemy.h"
 #include "CombinedLifeMeterTug.h"
 #include "Inventory.h"