Fix potential issue with Unicode
Fix potential issue with Unicode

Fix potential compilation error C2664: 'HANDLE CreateFileW(LPCWSTR,DWORD,DWORD,LPSECURITY_ATTRIBUTES,DWORD,DWORD,HANDLE)': cannot convert argument 1 from 'const char [8]' to 'LPCWSTR' with Unicode/MBCS, as reported here: https://github.com/root-project/cling/issues/186#issuecomment-404902026

root-mirror/cling,karies/cling,karies/cling,root-mirror/cling,root-mirror/cling,root-mirror/cling,root-mirror/cling,karies/cling,karies/cling,karies/cling,karies/cling,root-mirror/cling