- fixed the crash in testGithub497() on Windows with Python 3.x and MSVC 2015
- fixed the crash in testGithub497() on Windows with Python 3.x and MSVC 2015

ptosco/rdkit,bp-kelley/rdkit,jandom/rdkit,greglandrum/rdkit,rvianello/rdkit,greglandrum/rdkit,rvianello/rdkit,bp-kelley/rdkit,jandom/rdkit,greglandrum/rdkit,bp-kelley/rdkit,greglandrum/rdkit,ptosco/rdkit,rvianello/rdkit,jandom/rdkit,bp-kelley/rdkit,jandom/rdkit,jandom/rdkit,rvianello/rdkit,ptosco/rdkit,bp-kelley/rdkit,greglandrum/rdkit,ptosco/rdkit,jandom/rdkit,ptosco/rdkit,rdkit/rdkit,adalke/rdkit,greglandrum/rdkit,adalke/rdkit,greglandrum/rdkit,rvianello/rdkit,rvianello/rdkit,adalke/rdkit,rvianello/rdkit,rdkit/rdkit,bp-kelley/rdkit,jandom/rdkit,rvianello/rdkit,adalke/rdkit,rdkit/rdkit,bp-kelley/rdkit,rdkit/rdkit,adalke/rdkit,ptosco/rdkit,adalke/rdkit,bp-kelley/rdkit,rdkit/rdkit,rdkit/rdkit,adalke/rdkit,rdkit/rdkit,rdkit/rdkit,jandom/rdkit,ptosco/rdkit,adalke/rdkit,ptosco/rdkit,greglandrum/rdkit