git: update to v2.2.1

Update to git version v2.2.1, including API changes.

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

Makefile

@@ -14,7 +14,7 @@ htmldir = $(docdir)
 pdfdir = $(docdir)
 mandir = $(prefix)/share/man
 SHA1_HEADER = <openssl/sha.h>
-GIT_VER = 2.0.4
+GIT_VER = 2.2.1
 GIT_URL = https://www.kernel.org/pub/software/scm/git/git-$(GIT_VER).tar.gz
 INSTALL = install
 COPYTREE = cp -r

cgit.c

@@ -457,7 +457,7 @@ static char *guess_defbranch(void)
 	const char *ref;
 	unsigned char sha1[20];
 
-	ref = resolve_ref_unsafe("HEAD", sha1, 0, NULL);
+	ref = resolve_ref_unsafe("HEAD", 0, sha1, NULL);
 	if (!ref || !starts_with(ref, "refs/heads/"))
 		return "master";
 	return xstrdup(ref + 11);

git

@@ -1 +1 @@
-Subproject commit 32f56600bb6ac6fc57183e79d2c1515dfa56672f
+Subproject commit 9b7cbb315923e61bb0c4297c701089f30e116750

ui-log.c

@@ -56,11 +56,11 @@ static void inspect_files(struct diff_filepair *pair)
 
 void show_commit_decorations(struct commit *commit)
 {
-	struct name_decoration *deco;
+	const struct name_decoration *deco;
 	static char buf[1024];
 
 	buf[sizeof(buf) - 1] = 0;
-	deco = lookup_decoration(&name_decoration, &commit->object);
+	deco = get_name_decoration(&commit->object);
 	html("<span class='decoration'>");
 	while (deco) {
 		if (starts_with(deco->name, "refs/heads/")) {

ui-repolist.c

@@ -17,16 +17,17 @@ static time_t read_agefile(char *path)
 	time_t result;
 	size_t size;
 	char *buf;
-	static char buf2[64];
+	struct strbuf date_buf = STRBUF_INIT;
 
 	if (readfile(path, &buf, &size))
 		return -1;
 
-	if (parse_date(buf, buf2, sizeof(buf2)) > 0)
-		result = strtoul(buf2, NULL, 10);
+	if (parse_date(buf, &date_buf) == 0)
+		result = strtoul(date_buf.buf, NULL, 10);
 	else
 		result = 0;
 	free(buf);
+	strbuf_release(&date_buf);
 	return result;
 }