ui-shared: pass repo object to print_snapshot_links()

Both call sites of cgit_print_snapshot_links() use the same values for
the snapshot mask and repository name, which are derived from the
cgit_repo structure so let's pass in the structure and access the fields
directly.

Signed-off-by: John Keeping <john@keeping.me.uk>
Reviewed-by: Christian Hesse <mail@eworm.de>
diff --git a/ui-shared.c b/ui-shared.c
index 0c6ca60..e719c1b 100644
--- a/ui-shared.c
+++ b/ui-shared.c
@@ -1103,17 +1103,17 @@
 	strbuf_addf(filename, "%s-%s", base, ref);
 }
 
-void cgit_print_snapshot_links(const char *repo, const char *head,
-			       const char *hex, int snapshots)
+void cgit_print_snapshot_links(const struct cgit_repo *repo, const char *head,
+			       const char *hex)
 {
 	const struct cgit_snapshot_format* f;
 	struct strbuf filename = STRBUF_INIT;
 	size_t prefixlen;
 
-	cgit_compose_snapshot_prefix(&filename, cgit_repobasename(repo), hex);
+	cgit_compose_snapshot_prefix(&filename, cgit_repobasename(repo->url), hex);
 	prefixlen = filename.len;
 	for (f = cgit_snapshot_formats; f->suffix; f++) {
-		if (!(snapshots & f->bit))
+		if (!(repo->snapshots & f->bit))
 			continue;
 		strbuf_setlen(&filename, prefixlen);
 		strbuf_addstr(&filename, f->suffix);