Refresh ticket display immediately after renew

Set the CLeashApp::m_bUpdateDisplay flag to cause the display to
update on the next WM_IDLE message to the main thread.

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

(cherry picked from commit c5c528f955e4f6348e8e278cc7f6f65fc3a1a516)

https://github.com/krb5/krb5/commit/2d357d2ff3e3aa5e3c2dabd7a71b780dc7fb2a29
Author: Kevin Wasserman <kevin.wasserman@painless-security.com>
Committer: Tom Yu <tlyu@mit.edu>
Commit: 2d357d2ff3e3aa5e3c2dabd7a71b780dc7fb2a29
Branch: krb5-1.10
 src/windows/leash/LeashView.cpp |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)