[wasm] Refactor interface to WasmCompiledModule

src/wasm/wasm-objects.cc

Index: src/wasm/wasm-objects.cc
diff --git a/src/wasm/wasm-objects.cc b/src/wasm/wasm-objects.cc
index b96be04c7c8ad684130456bf22695e691eab12b7..19d48aa04b3b2eec7cfc9df9e10c30f4f0b08ffe 100644
--- a/src/wasm/wasm-objects.cc
+++ b/src/wasm/wasm-objects.cc
@@ -349,7 +349,7 @@ void WasmCompiledModule::PrintInstancesChain() {
   if (!FLAG_trace_wasm_instances) return;
   for (WasmCompiledModule* current = this; current != nullptr;) {
     PrintF("->%d", current->instance_id());
-    if (current->ptr_to_weak_next_instance() == nullptr) break;
+    if (!current->has_weak_next_instance()) break;
     CHECK(!current->ptr_to_weak_next_instance()->cleared());
     current =
         WasmCompiledModule::cast(current->ptr_to_weak_next_instance()->value());