Merge branch 'rs/pop-commit'

Code simplification.

* rs/pop-commit:
  use pop_commit() for consuming the first entry of a struct commit_list

remote.c

@@ -1939,10 +1939,8 @@ int resolve_remote_symref(struct ref *ref, struct ref *list)
 static void unmark_and_free(struct commit_list *list, unsigned int mark)
 {
 	while (list) {
-		struct commit_list *temp = list;
-		temp->item->object.flags &= ~mark;
-		list = temp->next;
-		free(temp);
+		struct commit *commit = pop_commit(&list);
+		commit->object.flags &= ~mark;
 	}
 }