[PATCH] drivers/net/hamradio/baycom_epp.c: cleanups

The times when tricky goto's produced better codes are long gone.

This patch should express the same in a better way.

(Also fixes the final gcc-4.0 x86 compile error)

Signed-off-by: Adrian Bunk <bunk@stusta.de>
Cc: Jeff Garzik <jgarzik@pobox.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>