Send CTRL-EVENT-NETWORK-NOT-FOUND if no suitable network was found

This provides more information to upper layer programs on what happens
with connection attempts in cases where the enabled networks are not
found in scan results.

Signed-off-by: Dmitry Shmidt <dimitrysh@google.com>

wpa_supplicant/events.c

@@ -1628,6 +1628,9 @@ static int wpas_select_network_from_last_scan(struct wpa_supplicant *wpa_s,
 			if (wpa_supplicant_req_sched_scan(wpa_s))
 				wpa_supplicant_req_new_scan(wpa_s, timeout_sec,
 							    timeout_usec);
+
+			wpa_msg_ctrl(wpa_s, MSG_INFO,
+				     WPA_EVENT_NETWORK_NOT_FOUND);
 		}
 	}
 	return 0;