staging: rtl8188eu: cleanup brace coding style issues

Cleanup brace coding style issues reported by checkpatch.

ERROR: space required before the open brace '{'
WARNING: braces {} are not necessary for single statement blocks
CHECK: Unbalanced braces around else statement

Signed-off-by: Michael Straube <straube.linux@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>