print download link for reference string length == 1

I have a number of repositories that start tagging with just '1' and
count up. Actually references with sting length of one are skipped, this
patch changes that.

ui-refs.c

@@ -105,7 +105,7 @@ static void print_tag_downloads(const struct cgit_repo *repo, const char *ref)
 	const char *basename;
 	int free_ref = 0;
 
-	if (!ref || strlen(ref) < 2)
+	if (!ref || strlen(ref) < 1)
 		return;
 
 	basename = cgit_repobasename(repo->url);