Fix the issue 524: memory leak

source/src/ports/generic_networkhandler.c

@@ -1093,6 +1093,7 @@ void CheckAndHandleConsumingUdpSocket(void) {
         int error_code = GetSocketErrorNumber();
         char *error_message = GetErrorMessage(error_code);
         if(OPENER_SOCKET_WOULD_BLOCK == error_code) {
+          FreeErrorMessage(error_message);
           return; // No fatal error, resume execution
         } OPENER_TRACE_ERR("networkhandler: error on recv: %d - %s\n",
                            error_code,