Fixes following shellcheck's recommendations:
In scripts/download-check-artifact.sh line 24:
exit $1
^-- SC2086 (info): Double quote to prevent globbing and word splitting.
In scripts/download-check-artifact.sh line 53:
local sum="$(shasum -a 256 "$image_file")";
^-^ SC2155 (warning): Declare and assign separately to avoid masking return values.
In scripts/download-check-artifact.sh line 72:
cd "/tmp/verify.$$"
^-----------------^ SC2164 (warning): Use 'cd ... || exit' or 'cd ... || return' in case cd fails.
In scripts/download-check-artifact.sh line 114:
printf "Keyserver to use? [$keyserver_url] > "
^-- SC2059 (info): Don't use variables in the printf format string. Use printf '..%s..' "$foo".
In scripts/download-check-artifact.sh line 115:
read url; case "${url:-$keyserver_url}" in
^--^ SC2162 (info): read without -r will mangle backslashes.
While at it make it clear, that it is possible to download/check any
build artifacts like even SDK or ImageBuilder.
Link: https://github.com/openwrt/openwrt/pull/16871
Signed-off-by: Petr Štetiar <ynezz@true.cz>
27c2c140b1