Update init.lua, qrencode.lua

init.lua

@@ -12,7 +12,7 @@ local function matrix_to_string(tab)
 				str_tab[y + 1][x + 1] = "1"
 			elseif tab[x][y] < 0 then
 				str_tab[y + 1][x + 1] = "0"
-			else 
+			else
 				str_tab[y + 1][x + 1] = " "
 				str_tab[y + 1][x + 2] = "1"
 			end
@@ -47,7 +47,6 @@ minetest.register_chatcommand("qrcode", {
 			print('Something went wrong')
 		else
 			local rows = matrix_to_string(tab_or_message)
-			local string
 			for x=1,#rows do
 				for z=1,#rows do
 					if rows[x][z] == "1" then

qrencode.lua

@@ -178,7 +178,6 @@ end
 -- See table 2 of the spec. We only support mode 1, 2 and 4.
 -- That is: numeric, alaphnumeric and binary.
 local function get_mode( str )
-	local mode
 	if string.match(str,"^[0-9]+$") then
 		return 1
 	elseif string.match(str,"^[0-9A-Z $%%*./:+-]+$") then