PVS-Studio warning V205 for WinMerge

void CPreferencesDlg::AddPage(CPropertyPage* pPage,
                              LPCTSTR szPath)
{
  ...
  m_tcPages.SetItemData(hti, (DWORD)pPage);
  ...
}

This is what should have been written here: (DWORD_PTR)pPage

This suspicious code was found in WinMerge project by PVS-Studio static code analyzer.
Warning message is:
V205 Explicit conversion of pointer type to 32-bit integer type: (DWORD) pPage Merge preferencesdlg.cpp 200

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/