[perl #125207] [JVM] Failing tests in S06-currying/assuming-and-mmd.t

[Christian Bartolomaeus via RT]

Actually, this also lead to spectest failures in S32-list/map.t and 
S06-currying/named.t

I fudged the failing tests with commit 
https://github.com/perl6/roast/commit/6302ae8ffa