pull out of the header

stepmania/src/ScreenManager.cpp

@@ -561,6 +561,11 @@ void ScreenManager::RefreshCreditsMessages()
 	LOG->MapLog( "JOINED", "Players joined: %s", joined.c_str() );
 }
 
+void ScreenManager::ZeroNextUpdate()
+{
+	m_bZeroNextUpdate = true;
+}
+
 /* Always play these sounds, even if we're in a silent attract loop. */
 void ScreenManager::PlayStartSound()
 {

stepmania/src/ScreenManager.h

@@ -67,7 +67,7 @@ public:
 	void PushSelf( lua_State *L );
 
 	void	PlaySharedBackgroundOffCommand();
-	void    ZeroNextUpdate() { m_bZeroNextUpdate = true; }
+	void    ZeroNextUpdate();
 private:
 	//
 	// in draw order first to last