fix mobs getting last dead player's death message

src/main/java/me/youhavetrouble/behappythatithappened/SadMomentListener.java

@@ -109,6 +109,8 @@ public class SadMomentListener implements Listener {
                     .color(NamedTextColor.GRAY)
             );
             meta.lore(lore);
+        } else {
+            meta.lore(null);
         }
         nametag .setItemMeta(meta);
         return nametag;