Merge pull request #2 from esp8266/master

pull master

libraries/ESP8266WiFi/src/ESP8266WiFi.cpp

@@ -831,7 +831,6 @@ void ESP8266WiFiClass::_eventCallback(void* arg)
 
     if (event->event == EVENT_STAMODE_DISCONNECTED) {
         WiFiClient::stopAll();
-        WiFiUDP::stopAll();
     }
 }
 

libraries/ESP8266WiFi/src/WiFiClientSecure.cpp

@@ -267,6 +267,9 @@ int WiFiClientSecure::available() {
 }
 
 uint8_t WiFiClientSecure::connected() {
+    if (!_client)
+        return 0;
+        
     if (_client->state() == ESTABLISHED)
         return 1;