Deauthenticate instead of disassociate on disconnect command

This clears up authentication state in the driver and in case of
cfg80211, unlocks the BSS entry for the previously used AP.

wpa_supplicant/ctrl_iface.c

@@ -1829,7 +1829,8 @@ char * wpa_supplicant_ctrl_iface_process(struct wpa_supplicant *wpa_s,
 	} else if (os_strcmp(buf, "DISCONNECT") == 0) {
 		wpa_s->reassociate = 0;
 		wpa_s->disconnected = 1;
-		wpa_supplicant_disassociate(wpa_s, WLAN_REASON_DEAUTH_LEAVING);
+		wpa_supplicant_deauthenticate(wpa_s,
+					      WLAN_REASON_DEAUTH_LEAVING);
 	} else if (os_strcmp(buf, "SCAN") == 0) {
 		wpa_s->scan_req = 2;
 		wpa_supplicant_req_scan(wpa_s, 0, 0);