Improve lsw too

CraftBukkit-Patches/0010-LongHash-Tweaks.patch

@@ -22,7 +22,7 @@ index 691cafd..7a5801f 100644
  
      public static int lsw(long l) {
 -        return (int) (l & 0xFFFFFFFF) + Integer.MIN_VALUE;
-+        return (int) (l & 0xFFFFFFFF); // Spigot
++        return (int) l; // Spigot
      }
  }
 diff --git a/src/main/java/org/bukkit/craftbukkit/util/LongHashSet.java b/src/main/java/org/bukkit/craftbukkit/util/LongHashSet.java