Staging: rtl8188eu/core: Coding style fix, avoid line over 80 characters

Jump a new line after and operator of the test. It avoids to exceed 80
chars line, and remove a checkpatch warning.

Signed-off-by: Colin Vidal <colin@cvidal.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>