[PATCH] s390: move var declarations behind ifdef

Two variables in drivers/s390/net/qeth_main.c:qeth_send_packet() are only
used if CONFIG_QETH_PERF_STATS.  Move their definition under the same ifdef
to remove compiler warning.

Signed-off-by: Serge Hallyn <serue@us.ibm.com>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Jeff Garzik <jeff@garzik.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>