fix wrench duplication

Author: BuckarooBanzay

.luacheckrc

@@ -21,6 +21,7 @@ read_globals = {
 	"doc",
 	"intllib",
 	"fakelib",
+	"wrench"
 }
 
 files = {

util_item_place_node.lua

@@ -28,6 +28,8 @@ digtron.facedir_to_dir_map = {
 	1, 4, 3, 2,
 }
 
+local has_wrench_mod = minetest.get_modpath("wrench")
+
 local function has_prefix(str, prefix)
 	return str:sub(1, string.len(prefix)) == prefix
 end
@@ -145,6 +147,13 @@ digtron.item_place_node = function(itemstack, placer, place_to, param2)
 	-- Add node and update
 	minetest.add_node(place_to, newnode)
 
+	-- check if the item can be "wrenched"
+	if has_wrench_mod and wrench.registered_nodes[itemstack:get_name()] then
+		-- item can be "wrenched" (contains the inventory serialized in the "data" field)
+		-- remove the serialized data on the placed node
+		itemstack:get_meta():set_string("data", "")
+	end
+
 	local take_item = true
 
 	-- Run callback, using genuine player for per-node definition.