hostapd: Fix HT40 determination for ACS offload

Commit 16689c7cfc99c66aecbf16eb2f4a8bc941cb5d0f ('hostapd: Allow ACS to
be offloaded to the driver') used incorrect operator to determine
whether HT40 was configured. Fix that to mask the ht_capab bit
correctly. (CID 77286)

Signed-off-by: Jouni Malinen <j@w1.fi>

src/ap/ap_drv_ops.c

@@ -804,7 +804,7 @@ int hostapd_drv_do_acs(struct hostapd_data *hapd)
 	os_memset(&params, 0, sizeof(params));
 	params.hw_mode = hapd->iface->conf->hw_mode;
 	params.ht_enabled = !!(hapd->iface->conf->ieee80211n);
-	params.ht40_enabled = !!(hapd->iface->conf->ht_capab |
+	params.ht40_enabled = !!(hapd->iface->conf->ht_capab &
 				 HT_CAP_INFO_SUPP_CHANNEL_WIDTH_SET);
 	return hapd->driver->do_acs(hapd->drv_priv, &params);
 }