Fix loop mount sqsh stuff

src/bridge

@@ -587,11 +587,9 @@ install_touch_update_key_squash()
 	mount_root_rw
 	logmsg "I" "install_touch_update_key_squash" "" "Copying the jailbreak updater keystore"
 	make_mutable "${ROOT}/etc/uks.sqsh"
-	local my_loop="$(grep ' /etc/uks ' /proc/mounts | cut -f1 -d' ')"
-	umount "${my_loop}"
-	losetup -d "${my_loop}"
+	umount "/etc/uks"
 	cp -f "${MKK_PERSISTENT_STORAGE}/updater_keys.sqsh" "${ROOT}/etc/uks.sqsh"
-	mount -o loop="${my_loop}",norelatime,nodiratime,noatime -t squashfs "${ROOT}/etc/uks.sqsh" "${ROOT}/etc/uks"
+	mount "/etc/uks.sqsh" "/etc/uks" -o loop,norelatime,nodiratime,noatime -t squashfs
 	chown root:root "${ROOT}/etc/uks.sqsh"
 	chmod 0644 "${ROOT}/etc/uks.sqsh"
 	make_immutable "${ROOT}/etc/uks.sqsh"