Fix inventory erase when player respawns by mods or plugins

Close #301

src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java

@@ -503,7 +503,7 @@ public class CraftPlayer extends CraftHumanEntity implements Player {
         if (fromWorld == toWorld) {
             entity.playerNetServerHandler.teleport(to);
         } else {
-            server.getHandle().respawnPlayer(entity, toWorld.dimension, false, to); // Cauldron
+            server.getHandle().respawnPlayer(entity, toWorld.dimension, false, to, cause); // Cauldron
         }
         return true;
     }