[d8] Fix Shell::Stringify when exceptions are thrown.

src/d8.cc

Index: src/d8.cc
diff --git a/src/d8.cc b/src/d8.cc
index 7b6270745bad9a3b09d28aebb836d8dcb65fddca..611b3b570b1a4448cf5feae7dd13174e3934e289 100644
--- a/src/d8.cc
+++ b/src/d8.cc
@@ -1088,8 +1088,7 @@ Local<String> Shell::Stringify(Isolate* isolate, Local<Value> value) {
   Local<Function> fun = Local<Function>::New(isolate, stringify_function_);
   Local<Value> argv[1] = {value};
   v8::TryCatch try_catch(isolate);
-  MaybeLocal<Value> result =
-      fun->Call(context, Undefined(isolate), 1, argv).ToLocalChecked();
+  MaybeLocal<Value> result = fun->Call(context, Undefined(isolate), 1, argv);
   if (result.IsEmpty()) return String::Empty(isolate);
   return result.ToLocalChecked().As<String>();
 }