PVS-Studio warning V511 for Shareaza

#define countof(array) (sizeof(array) / sizeof((array)[0]))

size_t AnsiDecodeChar(const BYTE* pBytes,
  size_t nNumBytes, TCHAR arrChar[2],
  size_t& nCharSize)
{
  ....
    nCharSize = MultiByteToWideChar(CP_ACP, 0,
      (const CHAR*)pBytes, nNumBytesInChar,
      arrChar, countof(arrChar));
  ....
}

The B object is simply a pointer. Value 2 in the square brackets indicates to the programmer that he is working with an array of 2 items.
But it is not an array of items which is passed into the function - it is only the pointer.
So, the sizeof(arrChar) expression will return value 4 or 8 (the size of the pointer in a 32-bit/64-bit system).

This suspicious code was found in Shareaza project by PVS-Studio static code analyzer.
Warning message is:
V511 The sizeof() operator returns size of the pointer, and not of the array, in 'sizeof ( arrChar )' expression. BugTrap encoding.cpp 477

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