Call CWinAppEx::InitInstance()

Without this, AfxGlobalsAddRef() is never called, so AfxGlobalsRelease()
does nothing, causing many leaks and a crash on exit in GdiplusShutdown()
on Vista.

Signed-off-by: Kevin Wasserman <kevin.wasserman@painless-security.com>

(cherry picked from commit 78b3e95e27ee1f53fc9e7cb2efda617ccd761bd7)

https://github.com/krb5/krb5/commit/64b7bc335165da083995c1c69fd0d6b1eb424f82
Author: Kevin Wasserman <kevin.wasserman@painless-security.com>
Committer: Tom Yu <tlyu@mit.edu>
Commit: 64b7bc335165da083995c1c69fd0d6b1eb424f82
Branch: krb5-1.10
 src/windows/leash/Leash.cpp |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)