Fixed: Releasing curl handle when not connected.

nel/src/web/http_client_curl.cpp

@@ -190,9 +190,12 @@ bool CCurlHttpClient::receive(string &res, bool verbose)
 
 // ***************************************************************************
 void CCurlHttpClient::disconnect()
+{
+	if (_CurlStruct)
 	{
 		curl_easy_cleanup(_Curl);
 		_CurlStruct = NULL;
+	}
 	curl_global_cleanup();
 }