Fix wither explosions breaking protected blocks (#321)

Author: T14D3

spigot/src/main/java/de/sean/blockprot/bukkit/listeners/EntityEventListener.java

@@ -44,5 +44,10 @@ public void onEntityChangeBlock(@NotNull final EntityChangeBlockEvent event) {
                     event.setCancelled(true);
             }
         }
+        else if (BlockProt.getDefaultConfig().isLockable(event.getBlock().getType())) {
+            BlockNBTHandler handler = new BlockNBTHandler(event.getBlock());
+            if (handler.isProtected())
+                event.setCancelled(true);
+        }
     }
 }