[perl #62432] Rakudo segfault when passing/calling sub

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With r35615.

Following script to perl6 segfaults:
sub yum() { }
sub callit(&x) { x; }
callit yum;

But this doesn't:
sub yum() { }
sub callit(&x) { x; }
callit &yum;

Neither does this:
sub yum() { }
yum;