string_list: add function string_list_append_nodup()

diff --git a/string-list.c b/string-list.c
index d9810aba421cbbc844b45ea5ca713a480a699eb2..ad2aa5af919f21fdfca6d61ec9939dc4ab145fdd 100644 (file)
--- a/string-list.c
+++ b/string-list.c
@@ -148,13 +148,23 @@ void print_string_list(const struct string_list *p, const char *text)
                printf("%s:%p\n", p->items[i].string, p->items[i].util);
 }
 
-struct string_list_item *string_list_append(struct string_list *list, const char *string)
+struct string_list_item *string_list_append_nodup(struct string_list *list,
+                                                 char *string)
 {
+       struct string_list_item *retval;
        ALLOC_GROW(list->items, list->nr + 1, list->alloc);
-       list->items[list->nr].string =
-               list->strdup_strings ? xstrdup(string) : (char *)string;
-       list->items[list->nr].util = NULL;
-       return list->items + list->nr++;
+       retval = &list->items[list->nr++];
+       retval->string = string;
+       retval->util = NULL;
+       return retval;
+}
+
+struct string_list_item *string_list_append(struct string_list *list,
+                                           const char *string)
+{
+       return string_list_append_nodup(
+                       list,
+                       list->strdup_strings ? xstrdup(string) : (char *)string);
 }
 
 static int cmp_items(const void *a, const void *b)