Merge branch 'fix-multiplayer-crash' into 'master'

A player who lost cannot initiate combat

Closes #1255

See merge request core-developers/forge!2643

forge-game/src/main/java/forge/game/player/Player.java

@@ -2525,6 +2525,10 @@ public class Player extends GameEntity implements Comparable<Player> {
     }
 
     public boolean isSkippingCombat() {
+        if (hasLost()) {
+            return true;
+        }
+
         if (hasKeyword("Skip your next combat phase.")) {
             return true;
         }