Add @(require_results) everywhere in os2

core/os/os2/heap.odin

@@ -2,6 +2,7 @@ package os2
 
 import "base:runtime"
 
+@(require_results)
 heap_allocator :: proc() -> runtime.Allocator {
 	return runtime.Allocator{
 		procedure = heap_allocator_proc,
@@ -10,6 +11,7 @@ heap_allocator :: proc() -> runtime.Allocator {
 }
 
 
+@(require_results)
 heap_allocator_proc :: proc(allocator_data: rawptr, mode: runtime.Allocator_Mode,
                             size, alignment: int,
                             old_memory: rawptr, old_size: int, loc := #caller_location) -> ([]byte, runtime.Allocator_Error) {