fix parset issues

src/tree.hpp

@@ -44,11 +44,13 @@ public:
 
 	void rename(const char* newName);
 
+	person_id last();
 	person_id findId(const char* name) const;
 	person_id findId(const char* name, Sex) const;
 	person_id findOldestAncestor(person_id, Sex) const;//
+
 	//oldest common ancestor ID, a person is considerd an ancestor of himself
-	person_id findCommonAncestor(person_id first, person_id second) const;
+	person_id findCommonAncestor(person_id first, person_id second) const; /* needs to be fixed, never return nobody */
 	RelType   findRelation(person_id first, person_id second) const;
 	person_id findParent(person_id child, Sex parentSex) const;
 	person_id findSpouse(person_id person) const;
@@ -97,7 +99,6 @@ private:
 	void selectRightSib(person_id);
 
 	std::string treeName;
-	unsigned numPeople = 0;
 	std::vector<Person> people;  //The data for each member
 	std::vector<std::vector<Relation>> relations;  //The relatives of each member