fix: Player could not concede having Platinum Angel on battlefield

src/main/java/forge/GuiDisplay4.java

@@ -75,7 +75,6 @@ import com.thoughtworks.xstream.XStreamException;
 
 import forge.card.cardFactory.CardFactoryUtil;
 import forge.error.ErrorViewer;
-import forge.game.GameLossReason;
 import forge.gui.ForgeAction;
 import forge.gui.GuiUtils;
 import forge.gui.game.CardDetailPanel;
@@ -1325,7 +1324,7 @@ public class GuiDisplay4 extends JFrame implements CardContainer, Display, NewCo
      * Exit the Application
      */
     private void concede() {
-        AllZone.getHumanPlayer().loseConditionMet(GameLossReason.Conceded, null );
+        AllZone.getHumanPlayer().concede();
         AllZone.getGameAction().checkStateEffects();
     }
 

src/main/java/forge/Player.java

@@ -1479,8 +1479,11 @@ public abstract class Player extends MyObservable {
         loseConditionSpell = spellName;
         return true;
     }
-    
-    
+
+    public void concede() { // No cantLose checks - just lose
+        lossState = GameLossReason.Conceded;
+        loseConditionSpell = null;
+    }
 
     /**
      * <p>cantLose.</p>
@@ -1488,6 +1491,8 @@ public abstract class Player extends MyObservable {
      * @return a boolean.
      */
     public boolean cantLose() {
+        if (lossState == GameLossReason.Conceded) { return false; }
+
         CardList list = AllZoneUtil.getPlayerCardsInPlay(this);
         list = list.getKeyword("You can't lose the game.");
 

src/main/java/forge/SetInfoUtil.java

@@ -203,9 +203,7 @@ public class SetInfoUtil {
 
         int mostRecent = -1;
 
-        for (int i = 0; i < alSI.size(); i++) {
-            SetInfo s = alSI.get(i);
-
+        for (SetInfo s : alSI) {
             for (int j = 0; j < setData.size(); j++) {
                 if (setData.get(j).get("Code3").equals(s.Code)) {
                     if (j > mostRecent) {