PVS-Studio warning V597 for UCSniff

int request_http_corporate_url(char *directory_buf,
                               int message_id)
{
  char send_msg[2048] = {'\0'};
  ...
  memset(send_msg,'\0',sizeof(send_msg));
  ...
}

This suspicious code was found in UCSniff project by PVS-Studio static code analyzer.
Warning message is:
V597 The compiler could delete the 'memset' function call, which is used to flush 'send_msg' buffer. The RtlSecureZeroMemory() function should be used to erase the private data.  http_handler.c 84

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