TTree::Draw uses up to 3 variables and a selection criterium.  Until this
fix, if more than one of those 4 identities were pointing to an 'array'
(like a part of a TClonesArray), only one of them was properly setup.
(The first one in the order : selection criterium, var1, var2, var3 that
was an array was setup properly, as a side effect if another variable was
using one of the array properly setup, this variable would look okay).


git-svn-id: http://root.cern.ch/svn/root/trunk@635 27541ba8-7e3a-0410-8455-c3a389f83636