tty: tty_jobctrl: Remove spaces before tabs

Remove spaces before tabs following the advice of checkpatch.pl.
Signed-off-by: Xiaofei Tan <tanxiaofei@huawei.com>
Link: https://lore.kernel.org/r/1617779210-51576-6-git-send-email-tanxiaofei@huawei.comSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/tty/tty_jobctrl.c

@@ -244,10 +244,10 @@ int tty_signal_session_leader(struct tty_struct *tty, int exit_session)
  *	it wants to disassociate itself from its controlling tty.
  *
  *	It performs the following functions:
- * 	(1)  Sends a SIGHUP and SIGCONT to the foreground process group
- * 	(2)  Clears the tty from being controlling the session
- * 	(3)  Clears the controlling tty for all processes in the
- * 		session group.
+ *	(1)  Sends a SIGHUP and SIGCONT to the foreground process group
+ *	(2)  Clears the tty from being controlling the session
+ *	(3)  Clears the controlling tty for all processes in the
+ *		session group.
  *
  *	The argument on_exit is set to 1 if called when a process is
  *	exiting; it is 0 if called by the ioctl TIOCNOTTY.