Silence unused warnings related to tests #2324
                
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Continuation of #2320 , but addressing tests.
@alfreb
test/kernel/integration/paging/service.cpphas an unusedheap_codevariable. I see you updated this test in 2019.The
void(*heap_code)() = (void(*)()) malloc(42);line is at the very beginning of the test. I suspect the intention of this is to warm of the allocator. Did you mean to change this tomagic->heap_code?I don't want to touch the tests based on assumptions on what the intention was, without fully understanding what the idea behind it was.
Additionally,
Expects(magic->last_error = Page_fault);is surely a subtle bug? That=should be==, right?