PVS-Studio warning V512 for ReactOS

VOID
UnloadAppInitDlls()
{
  ...
  WCHAR buffer[KEY_LENGTH];
  ...
  RtlCopyMemory(buffer, szAppInit, KEY_LENGTH);
  ...
}

Multiplication by sizeof(WCHAR) is missing, which causes copying only half of the data. This is what the code should look like: RtlCopyMemory(buffer, szAppInit, KEY_LENGTH * sizeof(WCHAR)).

This suspicious code was found in ReactOS project by PVS-Studio static code analyzer.
Warning message is:
V512 A call of the 'memcpy' function will lead to underflow of the buffer 'buffer'. user32 dllmain.c 162

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/