fix: search() call the destructor of phone_book

ex01/src/main.cpp

@@ -3,6 +3,7 @@
 #include <cstdlib>
 #include <iostream>
 #include  <bits/stdc++.h>
+#include <ostream>
 #include <sstream>
 #include <string>
 #include "../include/PhoneBook.hpp"
@@ -34,10 +35,9 @@ Contact* read_contact()
 		return (NULL);
 
 	return (new Contact(first_name, last_name, nickname, phone_number, darkest_secret));
-
 }
 
-Contact*	search(PhoneBook phone_book)
+Contact*	search(PhoneBook &phone_book)
 {
 	int				index;
 	std::string		index_str;
@@ -60,7 +60,6 @@ int	main()
 	Contact*			contact;
 	PhoneBook			phone_book;
 
-	phone_book = PhoneBook();
 	while (true)
 	{
 		std::cout << "command: ";