fix compile error

stepmania/src/PlayerNumber.cpp

@@ -54,6 +54,16 @@ PlayerNumber GetNextEnabledPlayer( PlayerNumber pn )
 	return PLAYER_INVALID;
 }
 
+PlayerNumber GetNextCpuPlayer( PlayerNumber pn )
+{
+	for( PlayerNumber p=(PlayerNumber)(pn+1); p<NUM_PLAYERS; ((int&)p)++ )
+	{
+		if( GAMESTATE->IsCpuPlayer(p) )
+			return p;
+	}
+	return PLAYER_INVALID;
+}
+
 PlayerNumber GetNextPotentialCpuPlayer( PlayerNumber pn )
 {
 	for( PlayerNumber p=(PlayerNumber)(pn+1); p<NUM_PLAYERS; ((int&)p)++ )

stepmania/src/PlayerNumber.h

@@ -29,10 +29,12 @@ enum PlayerNumber {
 #define FOREACH_PlayerNumber( pn ) FOREACH_ENUM( PlayerNumber, NUM_PLAYERS, pn )
 #define FOREACH_HumanPlayer( pn ) for( PlayerNumber pn=GetNextHumanPlayer((PlayerNumber)-1); pn!=PLAYER_INVALID; pn=GetNextHumanPlayer(pn) )
 #define FOREACH_EnabledPlayer( pn ) for( PlayerNumber pn=GetNextEnabledPlayer((PlayerNumber)-1); pn!=PLAYER_INVALID; pn=GetNextEnabledPlayer(pn) )
+#define FOREACH_CpuPlayer( pn ) for( PlayerNumber pn=GetNextCpuPlayer((PlayerNumber)-1); pn!=PLAYER_INVALID; pn=GetNextCpuPlayer(pn) )
 #define FOREACH_PotentialCpuPlayer( pn ) for( PlayerNumber pn=GetNextPotentialCpuPlayer((PlayerNumber)-1); pn!=PLAYER_INVALID; pn=GetNextPotentialCpuPlayer(pn) )
 
 PlayerNumber GetNextHumanPlayer( PlayerNumber pn );
 PlayerNumber GetNextEnabledPlayer( PlayerNumber pn );
+PlayerNumber GetNextCpuPlayer( PlayerNumber pn );
 PlayerNumber GetNextPotentialCpuPlayer( PlayerNumber pn );
 
 const PlayerNumber	OPPOSITE_PLAYER[NUM_PLAYERS] = { PLAYER_2, PLAYER_1 };

stepmania/src/ScreenGameplay.cpp

@@ -150,7 +150,7 @@ void ScreenGameplay::Init()
 
 
 	// fill in difficulty of CPU players with that of the first human player
-    FOREACH_CpuPlayer(p)
+    FOREACH_PotentialCpuPlayer(p)
         GAMESTATE->m_pCurNotes[p] = GAMESTATE->m_pCurNotes[ GAMESTATE->GetFirstHumanPlayer() ];
 
 	switch( GAMESTATE->m_PlayMode )