message: fix: invalid memory access in websocket_handler
  * fix: invalid memory access in websocket_handler
  * Revert "fix: invalid memory access in websocket_handler"
  This reverts commit
  * fix: (again) invalid memory access in websocket_handler
  Previous commit was incomplete; we need to shift the
  whole buffer.
diff: @@ -160,9 +160,9 @@ namespace NsMessageBroker
  DBG_MSG(("CWebSocketHandler::parseWebSocketData()length:%d; size:%d;"
  " position:%d\n", (int)length, size, position));
  - for (unsigned long i = 0; (i < size); i++) {
  - Buffer[parsedBufferPosition + i] = recBuffer[i+position];
  - }
  + memmove(&Buffer[parsedBufferPosition], &recBuffer[position],
  + size - position);
  +
  b_size -= position;
  parsedBufferPosition += length;
  recBuffer += length;
  