WiFiSTA - new status constant WL_STOPPED

to change initial WiFi.status() because WL_NO_SHIELD
is checked in any generic Arduino WiFi example

Author: JAndrassy

Diff for: libraries/WiFi/src/WiFiGeneric.cpp

@@ -1049,7 +1049,7 @@ esp_err_t WiFiGenericClass::_eventCallback(arduino_event_t *event)
             log_e("esp_wifi_set_ps failed");
         }
     } else if(event->event_id == ARDUINO_EVENT_WIFI_STA_STOP) {
-        WiFiSTAClass::_setStatus(WL_NO_SHIELD);
+        WiFiSTAClass::_setStatus(WL_STOPPED);
         clearStatusBits(STA_STARTED_BIT | STA_CONNECTED_BIT | STA_HAS_IP_BIT | STA_HAS_IP6_BIT);
     } else if(event->event_id == ARDUINO_EVENT_WIFI_STA_CONNECTED) {
         WiFiSTAClass::_setStatus(WL_IDLE_STATUS);

Diff for: libraries/WiFi/src/WiFiSTA.cpp

@@ -123,7 +123,7 @@ wifi_auth_mode_t WiFiSTAClass::_minSecurity = WIFI_AUTH_WPA2_PSK;
 wifi_scan_method_t WiFiSTAClass::_scanMethod = WIFI_FAST_SCAN;
 wifi_sort_method_t WiFiSTAClass::_sortMethod = WIFI_CONNECT_AP_BY_SIGNAL;
 
-static wl_status_t _sta_status = WL_NO_SHIELD;
+static wl_status_t _sta_status = WL_STOPPED;
 static EventGroupHandle_t _sta_status_group = NULL;
 
 void WiFiSTAClass::_setStatus(wl_status_t status)

Diff for: libraries/WiFi/src/WiFiType.h

@@ -41,6 +41,7 @@
 
 typedef enum {
     WL_NO_SHIELD        = 255,   // for compatibility with WiFi Shield library
+    WL_STOPPED          = 254,
     WL_IDLE_STATUS      = 0,
     WL_NO_SSID_AVAIL    = 1,
     WL_SCAN_COMPLETED   = 2,