tty: use 'if' in send_break() instead of 'goto'

[ Upstream commit 24f2cd01

 ]

Now, the "jumped-over" code is simple enough to be put inside an 'if'.
Do so to make it 'goto'-less.

Signed-off-by: "Jiri Slaby (SUSE)" <jirislaby@kernel.org>
Link: https://lore.kernel.org/r/20230919085156.1578-16-jirislaby@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Stable-dep-of: 66aad7d8

 ("usb: cdc-acm: return correct error code on unsupported break")
Signed-off-by: Sasha Levin <sashal@kernel.org>