cron.sh: identify & fix issues thanks to shellcheck

cron.sh

@@ -5,7 +5,8 @@ source="/home/ci/sftp-root/CIAptPackages";
 destination="/srv/aptosaurus/sources";
 aptosaurus="/srv/aptosaurus/aptosaurus.sh";
 
-export HOME="$(dirname "${aptosaurus}")";
+HOME="$(dirname "${aptosaurus}")";
+export HOME;
 
 # The user account to chown to & run aptosaurus under
 # FUTURE: Use own account? Is it worth it for a cron job?
@@ -19,5 +20,5 @@ chown -R "${user_account}:${user_account}" "${destination}";
 
 # Re-run aptosaurus
 aptosaurus_dir="$(dirname "${aptosaurus}")";
-cd "${aptosaurus_dir}" || { echo "Failed to cd into aptosaurus directory"; exit 1};
+cd "${aptosaurus_dir}" || { echo "Failed to cd into aptosaurus directory"; exit 1; };
 sudo -u "${user_account}" bash "$(basename "${aptosaurus}")" update-cron;