Replace birches with spruce in ice plains

mods/MAPGEN/mcl_biomes/init.lua

@@ -1886,6 +1886,26 @@ local function register_decorations()
 		flags = "place_center_x, place_center_z",
 	})
 
+	-- Rare spruce in ice plains
+	minetest.register_decoration({
+		deco_type = "schematic",
+		place_on = {"mcl_core:dirt_with_grass", "mcl_core:dirt_with_grass_snow"},
+		sidelen = 16,
+		noise_params = {
+			offset = -0.00075,
+			scale = -0.0015,
+			spread = {x = 250, y = 250, z = 250},
+			seed = 11,
+			octaves = 3,
+			persist = 0.7
+		},
+		biomes = {"ice_plains"},
+		y_min = 1,
+		y_max = mcl_vars.mg_overworld_max,
+		schematic = minetest.get_modpath("mcl_core").."/schematics/mcl_core_spruce_5.mts",
+		flags = "place_center_x, place_center_z",
+	})
+
 	-- Acacia (many variants)
 	for a=1, 7 do
 		minetest.register_decoration({
@@ -1958,24 +1978,6 @@ local function register_decorations()
 		schematic = minetest.get_modpath("mcl_core").."/schematics/mcl_core_birch.mts",
 		flags = "place_center_x, place_center_z",
 	})
-	minetest.register_decoration({
-		deco_type = "schematic",
-		place_on = {"mcl_core:dirt_with_grass", "mcl_core:dirt_with_grass_snow"},
-		sidelen = 16,
-		noise_params = {
-			offset = -0.00075,
-			scale = -0.0015,
-			spread = {x = 250, y = 250, z = 250},
-			seed = 11,
-			octaves = 3,
-			persist = 0.7
-		},
-		biomes = {"ice_plains"},
-		y_min = 1,
-		y_max = mcl_vars.mg_overworld_max,
-		schematic = minetest.get_modpath("mcl_core").."/schematics/mcl_core_birch.mts",
-		flags = "place_center_x, place_center_z",
-	})
 
 	-- Dark Oak
 	minetest.register_decoration({