ui-clone.c: Fix off-by-one error in pack path

Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>

ui-clone.c

@@ -32,16 +32,22 @@ static int print_ref_info(const char *refname, const unsigned char *sha1,
 static void print_pack_info(void)
 {
 	struct packed_git *pack;
-	int ofs;
+	char *offset;
 
 	ctx.page.mimetype = "text/plain";
 	ctx.page.filename = "objects/info/packs";
 	cgit_print_http_headers();
-	ofs = strlen(ctx.repo->path) + strlen("/objects/pack/");
 	prepare_packed_git();
-	for (pack = packed_git; pack; pack = pack->next)
-		if (pack->pack_local)
-			htmlf("P %s\n", pack->pack_name + ofs);
+	for (pack = packed_git; pack; pack = pack->next) {
+		if (pack->pack_local) {
+			offset = strrchr(pack->pack_name, '/');
+			if (offset && offset[1] != '\0')
+				++offset;
+			else
+				offset = pack->pack_name;
+			htmlf("P %s\n", offset);
+		}
+	}
 }
 
 static void send_file(char *path)