#2147 available() shouldn't return 0 after disconnect if there is still data...

#2147 available() shouldn't return 0 after disconnect if there is still data in the buffer. Otherwise, how would we know it was there? (#2148)

libraries/WiFi/src/WiFiClient.cpp

@@ -398,9 +398,6 @@ int WiFiClient::peek()
 
 int WiFiClient::available()
 {
-    if(!_connected) {
-        return 0;
-    }
     int res = _rxBuffer->available();
     if(_rxBuffer->failed()) {
         log_e("%d", errno);