Allow mossy cobble slabs to combine (#1791)

diff --git a/mods/stairs/init.lua b/mods/stairs/init.lua
index 8ec5aa7a190b29ac9c7991a4d06d7244c059218c..4f8e064cf7e3fc75ab6bfcf379873b03a7f86bf2 100644 (file)
--- a/mods/stairs/init.lua
+++ b/mods/stairs/init.lua
@@ -349,7 +349,7 @@ stairs.register_stair_and_slab(
 
 stairs.register_stair_and_slab(
        "mossycobble",
-       nil,
+       "default:mossycobble",
        {cracky = 3},
        {"default_mossycobble.png"},
        "Mossy Cobblestone Stair",