fix 'Load player edits, play one of the player edits, continue, choose Nontop; crash'

stepmania/src/ScreenContinue.cpp

@@ -15,8 +15,13 @@ void ScreenContinue::BeginScreen()
 {
 	GAMESTATE->SetCurrentStyle( NULL );
 
-	// unjoin all players with 0 stages left
-	FOREACH_HumanPlayer( p )
+	// Unjoin human players with 0 stages left and reset non-human players.
+	// We need to reset non-human players because data in non-human (CPU) 
+	// players will be filled, and there may be stale pointers to things like
+	// edit Steps.
+	FOREACH_ENUM( PlayerNumber, p )
+	{
+		if( GAMESTATE->IsHumanPlayer(p) )
 		{
 			bool bPlayerDone = GAMESTATE->m_iPlayerStageTokens[p] <= 0;
 			if( bPlayerDone )
@@ -25,6 +30,11 @@ void ScreenContinue::BeginScreen()
 				MEMCARDMAN->UnlockCard( p );
 			}
 		}
+		else
+		{
+			GAMESTATE->ResetPlayer( p );
+		}
+	}
 
 	ScreenWithMenuElements::BeginScreen();
 }