REF: https://bugzilla.tianocore.org/show_bug.cgi?id=4824 Fix the wrong logic in WifiMgrDxeHiiConfigAccessCallback with EFI_BROWSER_ACTION_CHANGING action. Cc: Jiangang He <jiangang.he@amd.com> Cc: Abner Chang <abner.chang@amd.com> Signed-off-by: Neo Hsueh <Hong-Chih.Hsueh@amd.com>