test get_git_work_tree() return value for NULL

diff --git a/string-list.h b/string-list.h
index 6569cf607b18b84f39ebee613471f270e42cfbdc..63b69c8d75ee33120a65a23598ddf93e84831bdd 100644 (file)
--- a/string-list.h
+++ b/string-list.h
@@ -38,5 +38,6 @@ struct string_list_item *string_list_lookup(const char *string, struct string_li
 struct string_list_item *string_list_append(const char *string, struct string_list *list);
 void sort_string_list(struct string_list *list);
 int unsorted_string_list_has_string(struct string_list *list, const char *string);
-
+struct string_list_item *unsorted_string_list_lookup(struct string_list *list,
+                                                    const char *string);
 #endif /* STRING_LIST_H */