stage1: Fix generation of pass-by-value args in async fns

The mismatch between the argument slot type in the frame structure and
the one used in the store operation made the generated code write
garbage over the nearby fields.

Fixes #7104
7ebbc717c0LemonBoy committed on 11/14/2020, 2:30:06 PMparentab4b34f
2 files changedLine totals unavailable