stage2: make tests/behaviour/void.zig work with c backend

* fix initialisation of void* fields of structs (initialises to 0xaa.. rather than {})
* don't generate struct fields when the field type does not have codegen bits
* in airAlloc generate a void* literal if the element type does not have codegen bits
4266795743Matthew Hall committed on 12/27/2021, 10:42:25 PM· committed by Andrew Kelleyparent1704667
2 files changedLine totals unavailable