Fixes an issue with GetCurrentSteps() where if you changed song on the music select and were trying to catch it in lua using CurrentSongChangedMessage it would not have updated the current steps in time (thus, returns the previous songs steps instead).

stepmania/src/GameState.cpp

@@ -2134,7 +2134,25 @@ public:
 	static int GetCurrentSteps( T* p, lua_State *L )
 	{
 		PlayerNumber pn = Enum::Check<PlayerNumber>(L, 1);
-		Steps *pSteps = p->m_pCurSteps[pn];  
+		
+		Steps* pSteps;
+		if(p->m_pCurSong.Get() != NULL)
+		{
+			pSteps = p->m_pCurSong.Get()->GetStepsByStepsType(GAMESTATE->GetCurrentStyle()->m_StepsType)[pn];
+					
+			if(pSteps == NULL)
+				pSteps = p->m_pCurSteps[pn];
+		}
+		else
+		{
+			pSteps = p->m_pCurSteps[pn];
+		}
+
+		// if you're on the music select and change song, the current steps are not
+		// updated correctly/in time for CurrentSongChangedMessageCommand 
+		// (as such the returned steps are that of the previous song
+
+//		Steps *pSteps = p->m_pCurSteps[pn];  
 		if( pSteps ) { pSteps->PushSelf(L); }
 		else		 { lua_pushnil(L); }
 		return 1;