Fix arguments by using arrays to buildup

usr/local/sbin/restic_check.sh

@@ -5,6 +5,16 @@
 # Exit on error, unset var, pipe failure
 set -euo pipefail
 
+# Clean up lock if we are killed.
+# If killed by systemd, like $(systemctl stop restic), then it kills the whole cgroup and all it's subprocesses.
+# However if we kill this script ourselves, we need this trap that kills all subprocesses manually.
+exit_hook() {
+	echo "In exit_hook(), being killed" >&2
+	jobs -p | xargs kill
+	restic unlock
+}
+trap exit_hook INT TERM
+
 # Assert that all needed environment variables are set.
 assert_envvars() {
 	local varnames=("$@")
@@ -19,15 +29,6 @@ assert_envvars \
 	B2_ACCOUNT_ID B2_ACCOUNT_KEY B2_CONNECTIONS \
 	RESTIC_PASSWORD_FILE RESTIC_REPOSITORY RESTIC_VERBOSITY_LEVEL
 
-# Clean up lock if we are killed.
-# If killed by systemd, like $(systemctl stop restic), then it kills the whole cgroup and all it's subprocesses.
-# However if we kill this script ourselves, we need this trap that kills all subprocesses manually.
-exit_hook() {
-	echo "In exit_hook(), being killed" >&2
-	jobs -p | xargs kill
-	restic unlock
-}
-trap exit_hook INT TERM
 
 # Remove locks from other stale processes to keep the automated backup running.
 # NOTE nope, don't unlock like restic_backup.sh. restic_backup.sh should take precedence over this script.