git: update to v2.24.0

Update to git version v2.24.0.

Never use get_cached_commit_buffer() directly, use repo_get_commit_buffer()
instead. The latter calls the former anyway. This fixes segmentation fault
when commit-graph is enabled and get_cached_commit_buffer() does not return
the expected result.

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

Makefile

@@ -14,7 +14,7 @@ htmldir = $(docdir)
 pdfdir = $(docdir)
 mandir = $(prefix)/share/man
 SHA1_HEADER = <openssl/sha.h>
-GIT_VER = 2.23.0
+GIT_VER = 2.24.0
 GIT_URL = https://www.kernel.org/pub/software/scm/git/git-$(GIT_VER).tar.xz
 INSTALL = install
 COPYTREE = cp -r

parsing.c

@@ -129,7 +129,7 @@ struct commitinfo *cgit_parse_commit(struct commit *commit)
 {
 	const int sha1hex_len = 40;
 	struct commitinfo *ret;
-	const char *p = get_cached_commit_buffer(the_repository, commit, NULL);
+	const char *p = repo_get_commit_buffer(the_repository, commit, NULL);
 	const char *t;
 
 	ret = xcalloc(1, sizeof(struct commitinfo));