mine close crash bug

src/engine/objects/Mine.java

@@ -634,12 +634,12 @@ public class Mine extends AbstractGameObject {
         // This mine does not have a valid claimer
         // we will therefore set it to errant
         // and keep the window open.
-        if (!Mine.validateClaimer(mine.lastClaimer)) {
+        //if (!Mine.validateClaimer(mine.lastClaimer)) {
-            mine.lastClaimer = null;
+        //    mine.lastClaimer = null;
-            mine.updateGuildOwner(null);
+        //    mine.updateGuildOwner(null);
-            mine.setActive(true);
+        //    mine.setActive(true);
-            return false;
+        //    return false;
-        }
+        //}
         //Update ownership to map
         mine.guildName = mine.getOwningGuild().getName();
         mine.guildTag = mine.getOwningGuild().getGuildTag();