t/lib-httpd.sh: use the $( ... ) construct for command substitution

diff --git a/submodule.c b/submodule.c
index 73cd4120a16cdd205a620dd5e536c89e3526c096..14e76247bf107da916cf100b8078cf10238e6b76 100644 (file)
--- a/submodule.c
+++ b/submodule.c
@@ -597,7 +597,7 @@ static void calculate_changed_submodule_paths(void)
                        diff_opts.output_format |= DIFF_FORMAT_CALLBACK;
                        diff_opts.format_callback = submodule_collect_changed_cb;
                        diff_setup_done(&diff_opts);
-                       diff_tree_sha1(get_object_hash(parent->item->object), get_object_hash(commit->object), "", &diff_opts);
+                       diff_tree_sha1(parent->item->object.oid.hash, commit->object.oid.hash, "", &diff_opts);
                        diffcore_std(&diff_opts);
                        diff_flush(&diff_opts);
                        parent = parent->next;