Fixed tables' on_place functions to properly check for on_rightclick

on whatever you try to place on, so that the on_rightclick is executed
instead of the table being placed (e.g. it was interfering with doors).

tables.lua

@@ -61,10 +61,14 @@ for i in ipairs(materials) do
 
 		on_place = function(itemstack, placer, pointed_thing)
 
-			local pitch = placer:get_look_pitch()
+			local node = minetest.env:get_node(pointed_thing.under)
+			if not minetest.registered_nodes[node.name] or not minetest.registered_nodes[node.name].on_rightclick then
+
 				local above = pointed_thing.above
 				local under = pointed_thing.under
+				local pitch = placer:get_look_pitch()
 				local node = minetest.env:get_node(above)
+
 				if node.name ~= "air" then return end
 
 				if above.x ~= under.x or above.z ~= under.z then 
@@ -79,6 +83,9 @@ for i in ipairs(materials) do
 					itemstack:take_item()
 				end
 				return minetest.item_place_node(itemstack, placer, pointed_thing)
+			else
+				minetest.registered_nodes[node.name].on_rightclick(pointed_thing.under, node, placer)
+			end
 		end
 	})
 
@@ -182,12 +189,14 @@ for i in ipairs(materials) do
 			fixed = { -0.5, -0.5, -0.5, 0.5, -0.4375, 0.5 },
 		},
 		on_place = function(itemstack, placer, pointed_thing)
+			local node = minetest.env:get_node(pointed_thing.under)
+			if not minetest.registered_nodes[node.name] or not minetest.registered_nodes[node.name].on_rightclick then
 
-			local pitch = placer:get_look_pitch()
 				local above = pointed_thing.above
 				local under = pointed_thing.under
-
+				local pitch = placer:get_look_pitch()
 				local node = minetest.env:get_node(above)
+
 				if node.name ~= "air" then return end
 
 				if above.x ~= under.x or above.z ~= under.z then 
@@ -202,6 +211,9 @@ for i in ipairs(materials) do
 					itemstack:take_item()
 				end
 				return minetest.item_place_node(itemstack, placer, pointed_thing)
+			else
+				minetest.registered_nodes[node.name].on_rightclick(pointed_thing.under, node, placer)
+			end
 		end
 	})
 
@@ -304,11 +316,14 @@ for i in ipairs(materials) do
 		},
 		on_place = function(itemstack, placer, pointed_thing)
 
-			local pitch = placer:get_look_pitch()
+			local node = minetest.env:get_node(pointed_thing.under)
+			if not minetest.registered_nodes[node.name] or not minetest.registered_nodes[node.name].on_rightclick then
+
 				local above = pointed_thing.above
 				local under = pointed_thing.under
-
+				local pitch = placer:get_look_pitch()
 				local node = minetest.env:get_node(above)
+
 				if node.name ~= "air" then return end
 
 				if above.x ~= under.x or above.z ~= under.z then 
@@ -323,6 +338,9 @@ for i in ipairs(materials) do
 					itemstack:take_item()
 				end
 				return minetest.item_place_node(itemstack, placer, pointed_thing)
+			else
+				minetest.registered_nodes[node.name].on_rightclick(pointed_thing.under, node, placer)
+			end
 		end
 	})