Re-added handlersList to event. (#3234)

src/main/java/com/gmail/nossr50/events/experience/McMMOPlayerExperienceEvent.java

@@ -2,6 +2,7 @@ package com.gmail.nossr50.events.experience;
 
 import org.bukkit.entity.Player;
 import org.bukkit.event.Cancellable;
+import org.bukkit.event.HandlerList;
 import org.bukkit.event.player.PlayerEvent;
 
 import com.gmail.nossr50.datatypes.skills.SkillType;
@@ -63,4 +64,15 @@ public abstract class McMMOPlayerExperienceEvent extends PlayerEvent implements
     public void setCancelled(boolean cancelled) {
         this.cancelled = cancelled;
     }
+    
+    private static final HandlerList handlers = new HandlerList();
+
+    @Override
+    public HandlerList getHandlers() {
+        return handlers;
+    }
+
+    public static HandlerList getHandlerList() {
+        return handlers;
+    }
 }