Skip stack trace formatting in case the global object is already dead.

src/api.cc

Index: src/api.cc
diff --git a/src/api.cc b/src/api.cc
index f4a78256ac41417dbe0fa2635bd1dd351b1f610f..7abe23f3a4c0ebb759864804bf19921e30e4ee55 100644
--- a/src/api.cc
+++ b/src/api.cc
@@ -3060,7 +3060,7 @@ Local<Array> v8::Object::GetPropertyNames() {
   i::Handle<i::JSObject> self = Utils::OpenHandle(this);
   bool threw = false;
   i::Handle<i::FixedArray> value =
-      i::GetKeysInFixedArrayFor(self, i::INCLUDE_PROTOS, &threw);
+      i::GetKeysInFixedArrayFor<true>(self, i::INCLUDE_PROTOS, &threw);
   if (threw) return Local<v8::Array>();
   // Because we use caching to speed up enumeration it is important
   // to never change the result of the basic enumeration function so
@@ -3081,7 +3081,7 @@ Local<Array> v8::Object::GetOwnPropertyNames() {
   i::Handle<i::JSObject> self = Utils::OpenHandle(this);
   bool threw = false;
   i::Handle<i::FixedArray> value =
-      i::GetKeysInFixedArrayFor(self, i::LOCAL_ONLY, &threw);
+      i::GetKeysInFixedArrayFor<true>(self, i::LOCAL_ONLY, &threw);
   if (threw) return Local<v8::Array>();
   // Because we use caching to speed up enumeration it is important
   // to never change the result of the basic enumeration function so