adjustement to ft_strjoin() after libft update

from libft : ft_strjoin() no longer return if an arg is NULL

srcs/parsing/expansions/expand_token.c

@@ -99,10 +99,6 @@ static t_list	*ret_parameter_expansion(char *content, int *i)
 	free(tmp);
 	if (expand->content)
 		expand->content = ft_strdup(expand->content);
-	else
-		expand->content = ft_calloc(1, 1);
-	if (!expand->content)
-		return (ft_retp_free(NULL, expand, free));
 	return (expand);
 }
 

srcs/parsing/expansions/rejoin_after_expand.c

@@ -18,12 +18,7 @@ char	*rejoin_after_expand(t_list *expand_lst)
 	char	*result;
 
 	head = expand_lst;
-	result = ft_calloc(1, 1);
-	if (!result)
-	{//todo wrap
-		perror("rejoin_after_expand() error");
-		return (ft_lstclear(&head, free));		
-	}
+	result = NULL;
 	while (expand_lst)
 	{
 		result = ft_strjoinfree_s1(result, expand_lst->content);