Correct the 'title' of the branch when splitting a vector of pointers

git-svn-id: http://root.cern.ch/svn/root/trunk@31242 27541ba8-7e3a-0410-8455-c3a389f83636

tree/tree/src/TBranchElement.cxx

@@ -809,7 +809,7 @@ void TBranchElement::Init(TTree *tree, TBranch *parent, const char* bname, TVirt
          return;
       }
       fClonesName = valueClass->GetName();
-      TString branchname;
+      TString branchname( name );
       branchname += "_";
       SetTitle(branchname);
       leaf->SetName(branchname);