From Ilka: fixes SegV after a double-click on a TFormula object in the browser.
From Ilka:
fixes SegV after a double-click on a TFormula object in the browser.


git-svn-id: ecbadac9c76e8cf640a0bca86f6bd796c98521e3@19184 27541ba8-7e3a-0410-8455-c3a389f83636

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