Fix test-api/ObjectProtoToStringES6

test/cctest/test-api.cc

Index: test/cctest/test-api.cc
diff --git a/test/cctest/test-api.cc b/test/cctest/test-api.cc
index b8cf20dd5b0924490fdcb5b57ed484e51797e9b4..dd5358c6c35f67b386807ee5e314c7038c0d3ab3 100644
--- a/test/cctest/test-api.cc
+++ b/test/cctest/test-api.cc
@@ -14020,7 +14020,7 @@ TEST(ObjectProtoToStringES6) {
   Local<Value> valueNumber = v8_num(123);
   Local<v8::Symbol> valueSymbol = v8_symbol("TestSymbol");
   Local<v8::Function> valueFunction =
-      CompileRun("function fn() {}").As<v8::Function>();
+      CompileRun("(function fn() {})").As<v8::Function>();
   Local<v8::Object> valueObject = v8::Object::New(v8::Isolate::GetCurrent());
   Local<v8::Primitive> valueNull = v8::Null(v8::Isolate::GetCurrent());
   Local<v8::Primitive> valueUndef = v8::Undefined(v8::Isolate::GetCurrent());