staging: rtl8723au: else should follow close brace

Correct checkpatch.pl errors in rtl8723au's rtw_security.c indicating
that an else statement should follow the closing brace of the previous
if/else if code block:
	ERROR: else should follow close brace '}'

Signed-off-by: M. Vefa Bicakci <m.v.b@runbox.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>