stop_station when no wifi-reconnect

Author: bill88t

supervisor/shared/web_workflow/web_workflow.c

@@ -266,6 +266,9 @@ bool supervisor_start_web_workflow(bool reload) {
 
     os_getenv_err_t result = common_hal_os_getenv_str("CIRCUITPY_WIFI_SSID", ssid, sizeof(ssid));
     if (result != GETENV_OK) {
+        #if CIRCUITPY_CYW43
+        common_hal_wifi_radio_stop_station(&common_hal_wifi_radio_obj);
+        #endif
         return false;
     }
 
@@ -274,6 +277,10 @@ bool supervisor_start_web_workflow(bool reload) {
         // if password is unspecified, assume an open network
         password[0] = '\0';
     } else if (result != GETENV_OK) {
+        #if CIRCUITPY_CYW43
+        common_hal_wifi_radio_stop_station(&common_hal_wifi_radio_obj);
+        #endif
+
         return false;
     }