Allow returnBlob and redirect in static protocol Both of these functions end up returning RETURN_INDIRECTLY, which is assumed to be an error by static.c's main. Treat it as success instead.

fun main () : transaction page =
    ua <- requestHeader "User-Agent";
    case ua of
        None => return <xml>Not found</xml>
      | Some s => return <xml>User-Agent: {[s]}</xml>