PVS-Studio warning V503 for Chromium

typedef void *HANDLE;

#if defined(OS_WIN)
  typedef HANDLE PlatformFile;
#elif defined(OS_POSIX)
  typedef int PlatformFile;
#endif

int64 SeekPlatformFile(PlatformFile file,
                       PlatformFileWhence whence,
                       int64 offset) {
  base::ThreadRestrictions::AssertIOAllowed();
  if (file < 0 || offset < 0)
    return -1;

  LARGE_INTEGER distance, res;
  distance.QuadPart = offset;
  DWORD move_method = static_cast<DWORD>(whence);
  if (!SetFilePointerEx(file, distance, &res, move_method))
    return -1;
  return res.QuadPart;
}

This suspicious code was found in Chromium project by PVS-Studio static code analyzer.
Warning message is:
V503 This is a nonsensical comparison: pointer < 0. platform_file_win.cc 124

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