git: update to v2.10.0

Upstream continues to replace unsigned char *sha1 with struct
object_id old_oid. This makes the required changes.

The git lib has its own main function now. Rename our main function
to cmd_main, it is called from main then.

1 files changed, 2 insertions, 2 deletions

diff --git a/ui-ssdiff.c b/ui-ssdiff.c
index d183d40..16c812f 100644
--- a/ui-ssdiff.c
+++ b/ui-ssdiff.c
@@ -229,7 +229,7 @@ static void print_ssdiff_line(char *class,
 	if (old_line_no > 0) {
 		struct diff_filespec *old_file = cgit_get_current_old_file();
 		char *lineno_str = fmt("n%d", old_line_no);
-		char *id_str = fmt("id=%s#%s", is_null_sha1(old_file->sha1)?"HEAD":sha1_to_hex(old_rev_sha1), lineno_str);
+		char *id_str = fmt("id=%s#%s", is_null_oid(&old_file->oid)?"HEAD":oid_to_hex(old_rev_oid), lineno_str);
 		char *fileurl = cgit_fileurl(ctx.repo->url, "tree", old_file->path, id_str);
 		html("<td class='lineno'><a href='");
 		html(fileurl);
@@ -252,7 +252,7 @@ static void print_ssdiff_line(char *class,
 	if (new_line_no > 0) {
 		struct diff_filespec *new_file = cgit_get_current_new_file();
 		char *lineno_str = fmt("n%d", new_line_no);
-		char *id_str = fmt("id=%s#%s", is_null_sha1(new_file->sha1)?"HEAD":sha1_to_hex(new_rev_sha1), lineno_str);
+		char *id_str = fmt("id=%s#%s", is_null_oid(&new_file->oid)?"HEAD":oid_to_hex(new_rev_oid), lineno_str);
 		char *fileurl = cgit_fileurl(ctx.repo->url, "tree", new_file->path, id_str);
 		html("<td class='lineno'><a href='");
 		html(fileurl);