决定WriteComm前memset导致发空数据的问题；

TestWizard/TestWizard/SynSerial.cpp

@@ -302,7 +302,6 @@ DWORD CSynSerial::WriteComm(IN BYTE * pWirteBuf, IN CONST INT32 nWriteSize)
 	// дǰ,Çå¿Õ»º´æÇø;
 	PurgeComm(m_hSerialPort, PURGE_TXABORT | PURGE_RXABORT | PURGE_TXCLEAR | PURGE_RXCLEAR);
 
-	memset(pWirteBuf, 0, nWriteSize);
 	if ( !WriteFile(m_hSerialPort, pWirteBuf, nWriteSize, &dwBytesWritten, &m_wrOverlapped) )
 	{
 		DWORD dwError = GetLastError();