PVS-Studio warning V579 for Quake3

void CXYWnd::Paste()
{
  ...
  char* pBuffer = new char[nLen+1];
  memset( pBuffer, 0, sizeof(pBuffer) );
  ...
}

Most likely this is what should be written here: memset( pBuffer, 0, (nLen+1) * sizeof(char) );

This suspicious code was found in Quake3 project by PVS-Studio static code analyzer.
Warning message is:
V579 The memset function receives the pointer and its size as arguments. It is possibly a mistake. Inspect the third argument. Radiant xywnd.cpp 3512

PVS-Studio is a static analyzer for detecting bugs in the source code of applications written in C, C++, C++11, C++/CX. Site: http://www.viva64.com/en/pvs-studio/