Fix memory leak

src/deptree.cpp

@@ -274,6 +274,7 @@ void TreeEvaluate(std::mutex* mtx, int* errflag, DepTree::LeafVector* leafs, con
    }
    mtx[1].unlock();
    // End locked section
+   delete eob;
    leaf->parents.clear();
    delete leaf;
   }
@@ -364,6 +365,7 @@ void TreeEvaluate(int* errflag, DepTree::LeafVector* leafs)
     // If node have no children, it's a new leaf node
     if(0==i->childrens.size() && DepTree::ROOT!=i->type) leafs->push_back(i);
    }
+   delete eob;
    leaf->parents.clear();
    delete leaf;
   }