git: update to v2.31.0

Update to git version v2.31.0, this requires changes for these
upstream commits:

* 36a317929b8f0c67d77d54235f2d20751c576cbb
  refs: switch peel_ref() to peel_iterated_oid()

Signed-off-by: Christian Hesse <mail@eworm.de>

Makefile

@@ -14,7 +14,7 @@ htmldir = $(docdir)
 pdfdir = $(docdir)
 mandir = $(prefix)/share/man
 SHA1_HEADER = <openssl/sha.h>
-GIT_VER = 2.30.1
+GIT_VER = 2.31.0
 GIT_URL = https://www.kernel.org/pub/software/scm/git/git-$(GIT_VER).tar.xz
 INSTALL = install
 COPYTREE = cp -r

git

@@ -1 +1 @@
-Subproject commit 773e25afc41b1b6533fa9ae2cd825d0b4a697fad
+Subproject commit a5828ae6b52137b913b978e16cd2334482eb4c1f

ui-log.c

@@ -65,8 +65,9 @@ void show_commit_decorations(struct commit *commit)
 		return;
 	html("<span class='decoration'>");
 	while (deco) {
-		struct object_id peeled;
+		struct object_id oid_tag, peeled;
 		int is_annotated = 0;
+
 		strlcpy(buf, prettify_refname(deco->name), sizeof(buf));
 		switch(deco->type) {
 		case DECORATION_NONE:
@@ -79,8 +80,8 @@ void show_commit_decorations(struct commit *commit)
 				ctx.qry.showmsg, 0);
 			break;
 		case DECORATION_REF_TAG:
-			if (!peel_ref(deco->name, &peeled))
-				is_annotated = !oidcmp(&commit->object.oid, &peeled);
+			if (!read_ref(deco->name, &oid_tag) && !peel_iterated_oid(&oid_tag, &peeled))
+				is_annotated = !oideq(&oid_tag, &peeled);
 			cgit_tag_link(buf, NULL, is_annotated ? "tag-annotated-deco" : "tag-deco", buf);
 			break;
 		case DECORATION_REF_REMOTE: