Show progress output also for unmount

Signed-off-by: Joachim Wiberg <troglobit@gmail.com>

src/mount.c

@@ -98,6 +98,7 @@ static int unmount(const char *target)
 		print(2, "Failed unmounting %s, error %d: %s", target, errno, strerror(errno));
 		return rc;
 	}
+	print(0, "Unmounting %s", target);
 
 	return 0;
 }