staging: rtl8723au: core: Add consistent spacing around '&'

This patch fixes checkpatch.pl error in file rtw_ap.c
ERROR: need consistent spacing around '&' (ctx:WxV)
Signed-off-by: NAybuke Ozdemir <aybuke.147@gmail.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/rtl8723au/core/rtw_ap.c

@@ -299,7 +299,7 @@ void	expire_timeout_chk23a(struct rtw_adapter *padapter)
 		int ret = _FAIL;
 
 		psta = chk_alive_list[i];
-		if (!(psta->state &_FW_LINKED))
+		if (!(psta->state & _FW_LINKED))
 			continue;
 
 		if (psta->state & WIFI_SLEEP_STATE)