t: prefer "git config --file" to GIT_CONFIG with test_must_fail

diff --git a/test-string-list.c b/test-string-list.c
index 00ce6c9a129674c1922e0c388366592c5ae7c8c7..14bdf9d2153a98d0b2a5d03395c1adcc166f8a07 100644 (file)
--- a/test-string-list.c
+++ b/test-string-list.c
@@ -38,7 +38,7 @@ static void write_list_compact(const struct string_list *list)
 static int prefix_cb(struct string_list_item *item, void *cb_data)
 {
        const char *prefix = (const char *)cb_data;
-       return !prefixcmp(item->string, prefix);
+       return starts_with(item->string, prefix);
 }
 
 int main(int argc, char **argv)