From Glen Salo: The following changes to TGButton.cxx seem to fix a problem I was having with my GUIs.  My problems were fixed by initializing the fHKeycode to zero in TGCheckButton and TGRadioButton following the same convention used in TGTextButton.
From Glen Salo:
The following changes to TGButton.cxx seem to fix a problem I was having
with my GUIs.  My problems were fixed by initializing the fHKeycode to
zero in TGCheckButton and TGRadioButton following the same convention used
in TGTextButton.


git-svn-id: ecbadac9c76e8cf640a0bca86f6bd796c98521e3@4271 27541ba8-7e3a-0410-8455-c3a389f83636

dawehner/root,dawehner/root,bbannier/ROOT,dawehner/root,bbannier/ROOT,bbannier/ROOT,bbannier/ROOT,dawehner/root,bbannier/ROOT,dawehner/root,bbannier/ROOT,dawehner/root,dawehner/root,bbannier/ROOT,dawehner/root