[perl #70119] List in a named argument shouldn't need extra parens.

[Lewis Wall]

# New Ticket Created by Lewis Wall
# Please include the string: [perl #70119]
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# <URL: http://rt.perl.org/rt3/Ticket/Display.html?id=70119 >

[17:48] <quietfanatic> rakudo: sub x (:@args) { say @args.perl }; x :args(3,
4)
[17:48] <+p6eval> rakudo 432047: OUTPUT«Nominal type check failed for
parameter '@args'; expected Positional but got Int instead␤in Main (file
src/gen_setting.pm, line 324)␤»
[17:48] <quietfanatic> rakudo: sub x (:@args) { say @args.perl }; x
:args((3, 4))
[17:49] <+p6eval> rakudo 432047: OUTPUT«[3, 4]␤»
[17:49] <quietfanatic> This isn't supposed to work that way is it?
[17:50] <@jnthn> quietfanatic: That looks a tad dubious...
[17:50] <quietfanatic> a comma is an operator that produces a list. The
parens shouldn't be what does it...
[17:50] <@jnthn> Aye.
[17:50] <@jnthn> Looks like a fail.