Declare some variables as local where globals are not needed

bale/init.lua

@@ -1,4 +1,4 @@
-S = minetest.get_translator(minetest.get_current_modname())
+local S = minetest.get_translator(minetest.get_current_modname())
 
 minetest.register_node("bale:bale", {
 	description = S("Bale"),

petz/petz/chicken_mobkit.lua

@@ -16,6 +16,8 @@ for i=1, 3 do
 	local aggressive
 	local is_baby
 	local is_male
+	local sounds
+	local backface_culling
 	if i == 1 then
 		pet_name = "hen"
 		description = "Hen"

petz/petz/lamb_mobkit.lua

@@ -8,7 +8,7 @@ local scale_model = 2.5
 local scale_baby = 0.5
 local visual_size = {x=petz.settings.visual_size.x*scale_model, y=petz.settings.visual_size.y*scale_model}
 local visual_size_baby = {x=petz.settings.visual_size.x*scale_model*scale_baby, y=petz.settings.visual_size.y*scale_model*scale_baby}
-mesh = 'petz_lamb.b3d'
+local mesh = 'petz_lamb.b3d'
 local skin_colors = {"white", "grey", "dark_grey", "brown", "vanilla"}
 local textures = {}
 for n = 1, #skin_colors do