inject.sh: fix oversight in me bruteforce

i used i instead of 1, in the variable when running
the extract_archive function.

this didn't trigger since +u was set, and +e was set.

in practise, then, it seems that because of this, and
because my ME extract/insert test was a success, that
none of the archives we use actually have a ME inside
of a file inside of a given downloaded archive.

still, this is technically incorrect, so fix it!

Signed-off-by: Leah Rowe <leah@libreboot.org>

include/inject.sh

@@ -174,7 +174,7 @@ extract_intel_me_bruteforce()
 	"$me7updateparser" -O "$_metmp" "$1" && return 1
 
 	_7ztest="${_7ztest}a"
-	extract_archive "$i" "$_7ztest" || return 0
+	extract_archive "$1" "$_7ztest" || return 0
 
 	fe_ extract_intel_me_bruteforce "$_7ztest" -type f || return 1; :
 }