add test for RT #63596 (null pmc) - rakudo still does not do the right thing, so it fails the test, but for another reason.
add test for RT #63596 (null pmc) - rakudo still does not do the right thing, so it fails the test, but for another reason.

zostay/roast,niner/roast,dogbert17/roast,dankogai/roast,b2gills/roast,b2gills/roast,laben/roast,skids/roast,dankogai/roast,laben/roast,perl6/roast,niner/roast,bitrauser/roast,cygx/roast,skids/roast,cygx/roast,skids/roast,laben/roast,cygx/roast,zostay/roast,b2gills/roast,dogbert17/roast,niner/roast,bitrauser/roast,dankogai/roast,zostay/roast