tty: Remove !tty condition from __proc_set_tty()

The tty parameter to __proc_set_tty() cannot be NULL; all
call sites have already dereferenced tty.

Signed-off-by: Peter Hurley <peter@hurleysoftware.com>
Reviewed-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
1 file changed