staging: rtl8723au: core: rtw_wlan_util: fix misleading indentation

For loop is outside of the else branch of the above conditional statement.
Fixing misleading indentation.

Fix a smatch warning:
drivers/staging/rtl8723au/core/rtw_wlan_util.c:528
WMMOnAssocRsp23a() warn: curly braces intended?
Signed-off-by: Luis de Bethencourt <luisbg@osg.samsung.com>
Acked-by: Jes Sorensen <Jes.Sorensen@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>