[PRISM] Fix incorrect use of VM_CALL_KW_SPLAT_MUT in zsuper with keyword splat
This copies the changes from 771a2f039b9a059a73e8f111d1d46590fa697f63. Fixes ruby/prism#2310.
[PRISM] Fix incorrect use of VM_CALL_KW_SPLAT_MUT in zsuper with keyword splat
This copies the changes from 771a2f039b9a059a73e8f111d1d46590fa697f63.
Fixes ruby/prism#2310.