dbssh: Fix optional command handling

msys2-dbssh

@@ -7,4 +7,10 @@ host=repo@msys2.appfleet.io
 # remote_gpga_socket="$(ssh "${host}" -- gpgconf --list-dirs agent-socket)"
 remote_gpga_socket="/home/repo/.gnupg/S.gpg-agent"
 
-exec ssh -tt -A -R "${remote_gpga_socket}:$(gpgconf --list-dirs agent-extra-socket)" "${host}" -- bash -li "${@}"
+if test "${#}" -eq 0
+then
+	args=()
+else
+	args=(bash -lc "'\"\$@\"'" bash)
+fi
+exec ssh -tt -A -R "${remote_gpga_socket}:$(gpgconf --list-dirs agent-extra-socket)" "${host}" -- "${args[@]}" "${@}"