Fix Teleport sounds when teleport fails (#137)

api.lua

@@ -188,7 +188,9 @@ function unified_inventory.go_home(player)
 	local pos = unified_inventory.home_pos[player:get_player_name()]
 	if pos then
 		player:set_pos(pos)
+		return true
 	end
+	return false
 end
 
 -- register_craft

register.lua

@@ -76,9 +76,9 @@ unified_inventory.register_button("home_gui_go", {
 	action = function(player)
 		local player_name = player:get_player_name()
 		if minetest.check_player_privs(player_name, {home=true}) then
-			minetest.sound_play("teleport",
-				{to_player=player:get_player_name(), gain = 1.0})
-			unified_inventory.go_home(player)
+			if unified_inventory.go_home(player) then
+				minetest.sound_play("teleport", {to_player = player_name})
+			end
 		else
 			minetest.chat_send_player(player_name,
 				S("You don't have the \"home\" privilege!"))