add: include magic part of pathspec on --refresh error

When `git add --refresh <pathspec>` doesn't find any matches for the
given pathspec, it prints an error message using the `match` field of
the `struct pathspec_item`. However, this field doesn't contain the
magic part of the pathspec. Instead, let's use the `original` field.

Signed-off-by: Matheus Tavares <matheus.bernardino@usp.br>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

builtin/add.c

@@ -187,7 +187,7 @@ static void refresh(int verbose, const struct pathspec *pathspec)
 	for (i = 0; i < pathspec->nr; i++) {
 		if (!seen[i])
 			die(_("pathspec '%s' did not match any files"),
-			    pathspec->items[i].match);
+			    pathspec->items[i].original);
 	}
 	free(seen);
 }