[mcl_core] fix warnings

mods/ITEMS/mcl_core/nodes_base.lua

@@ -990,9 +990,8 @@ for i=1,8 do
 			local itemcount = itemstack:get_count()
 			local fakestack = ItemStack(itemstring.." "..itemcount)
 			fakestack:set_name("mcl_core:snow_"..math.min(8, (i+g)))
-			local success
-			itemstack, success = minetest.item_place(fakestack, placer, pointed_thing)
-			minetest.sound_play(mcl_sounds.node_sound_snow_defaults().place, {pos = below}, true)
+			itemstack = minetest.item_place(fakestack, placer, pointed_thing)
+			minetest.sound_play(mcl_sounds.node_sound_snow_defaults().place, {pos = pointed_thing.under}, true)
 			itemstack:set_name(itemstring)
 			return itemstack
 		end

mods/ITEMS/mcl_core/nodes_climb.lua

@@ -120,7 +120,6 @@ minetest.register_node("mcl_core:vine", {
 		local node = minetest.get_node(under)
 		local def = minetest.registered_nodes[node.name]
 		if not def then return itemstack end
-		local groups = def.groups
 
 		-- Check special rightclick action of pointed node
 		if def and def.on_rightclick then

mods/ITEMS/mcl_core/nodes_liquid.lua

@@ -3,7 +3,10 @@
 local S = minetest.get_translator("mcl_core")
 local N = function(s) return s end
 
-local WATER_ALPHA = 179
+local vector = vector
+local math = math
+
+--local WATER_ALPHA = 179
 local WATER_VISC = 1
 local LAVA_VISC = 7
 local LIGHT_LAVA = minetest.LIGHT_MAX
@@ -215,7 +218,7 @@ local emit_lava_particle = function(pos)
 		return
 	end
 	local ppos = vector.add(pos, { x = math.random(-7, 7)/16, y = 0.45, z = math.random(-7, 7)/16})
-	local spos = vector.add(ppos, { x = 0, y = -0.2, z = 0 })
+	--local spos = vector.add(ppos, { x = 0, y = -0.2, z = 0 })
 	local vel = { x = math.random(-3, 3)/10, y = math.random(4, 7), z = math.random(-3, 3)/10 }
 	local acc = { x = 0, y = -9.81, z = 0 }
 	-- Lava droplet

mods/ITEMS/mcl_core/nodes_misc.lua

@@ -39,7 +39,6 @@ minetest.register_node("mcl_core:slimeblock", {
 		type = "regular",
 	},
 	tiles = {"mcl_core_slime.png"},
-	paramtype = "light",
 	use_texture_alpha = minetest.features.use_texture_alpha_string_modes and "blend" or true,
 	stack_max = 64,
 	-- According to Minecraft Wiki, bouncing off a slime block from a height off 255 blocks should result in a bounce height of 50 blocks

mods/ITEMS/mcl_core/nodes_trees.lua

@@ -107,7 +107,6 @@ local register_wooden_planks = function(subname, description, tiles)
 end
 
 local register_leaves = function(subname, description, longdesc, tiles, sapling, drop_apples, sapling_chances, leafdecay_distance)
-	local drop
 	if leafdecay_distance == nil then
 		leafdecay_distance = 4
 	end