- my $res = $ctx->{www}->coderepo->srv(\%ctx);
- $res->(delete $ctx{env}->{'qspawn.wcb'}) if ref($res) eq 'CODE';
- $res; # non ARRAY ref for ->psgi_return_init_cb
+ $ctx->{env}->{'qspawn.fallback'} = $code;
+ my $res = $ctx->{www}->coderepo->srv($ctx);
+ # for ->psgi_return_init_cb
+ $ctx->{env}->{'qspawn.wcb'} = $wcb;
+ $res; # CODE or ARRAY ref