In TChain::LoadTree add support for the special case where all Trees in the chain have 0 entries. The first Tree in the chain is loaded such that TTree::CloneTree can still work.
In TChain::LoadTree add support for the special case where all Trees
in the chain have 0 entries. The first Tree in the chain is loaded
such that TTree::CloneTree can still work.


git-svn-id: ecbadac9c76e8cf640a0bca86f6bd796c98521e3@8340 27541ba8-7e3a-0410-8455-c3a389f83636

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