[perl #125634] [BUG] Using a compiled (mbc) wrapping trait: Cannot invoke this object (REPR: Null, cs = 0)

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How to reproduce:

    cdc:~/golf$ cat lib/Golf.pm6

    unit module Golf;

    multi sub trait_mod:<is>(Routine $routine, :$wrapped!) {
        $routine.wrap: -> |args { callwith(|args) }
    }

    sub foo is export is wrapped { say 'OK' }

    cdc:~/golf$ panda-build
    Compiling lib/Golf.pm6 to mbc

    cdc:~/golf$ PERL6LIB=$PWD/blib/lib perl6 -e 'use Golf; foo'
    Cannot invoke this object (REPR: Null, cs = 0)
        in block  at lib/Golf.pm6:4
        in any enter at src/gen/m-Metamodel.nqp:3560
  
Expected result -- same as without precompilation:

    cdc:~/golf$ PERL6LIB=$PWD/lib perl6 -e 'use Golf; foo'
    OK