Fix explosions when hypering over Buf
Fix explosions when hypering over Buf

Buf.list returns a Seq, which explodes when we rake its guts
for List stuff inside &nodemap.

Fix by making it return a List. Part of addressing
https://github.com/rakudo/rakudo/issues/1344

Bug find: https://irclog.perlgeek.de/perl6/2018-01-07#i_15660359

nbrown/rakudo,salortiz/rakudo,nbrown/rakudo,salortiz/rakudo,softmoth/rakudo,MasterDuke17/rakudo,nbrown/rakudo,lucasbuchala/rakudo,tony-o/rakudo,tbrowder/rakudo,MasterDuke17/rakudo,nbrown/rakudo,Gnouc/rakudo,softmoth/rakudo,rakudo/rakudo,rakudo/rakudo,MasterDuke17/rakudo,Gnouc/rakudo,tbrowder/rakudo,tbrowder/rakudo,lucasbuchala/rakudo,tony-o/rakudo,salortiz/rakudo,labster/rakudo,salortiz/rakudo,tbrowder/rakudo,Gnouc/rakudo,Gnouc/rakudo,lucasbuchala/rakudo,rakudo/rakudo,Gnouc/rakudo,salortiz/rakudo,labster/rakudo,lucasbuchala/rakudo,rakudo/rakudo,nbrown/rakudo,softmoth/rakudo,tony-o/rakudo,labster/rakudo,softmoth/rakudo,salortiz/rakudo,tbrowder/rakudo,rakudo/rakudo,MasterDuke17/rakudo,tbrowder/rakudo,tony-o/rakudo,lucasbuchala/rakudo,MasterDuke17/rakudo,tony-o/rakudo,labster/rakudo,nbrown/rakudo,softmoth/rakudo,MasterDuke17/rakudo,rakudo/rakudo,Gnouc/rakudo,labster/rakudo,labster/rakudo,tony-o/rakudo