Issue 6526 - Use the maybe version of Compile() and Run()

src/JsEngine.cpp

 /*
  * This file is part of Adblock Plus <https://adblockplus.org/>,
  * Copyright (C) 2006-present eyeo GmbH
  *
  * Adblock Plus is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License version 3 as
  * published by the Free Software Foundation.
  *
  * Adblock Plus is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
@@ skipping 169 matching lines @@
   JsContext context(*this);
   return JsValue(shared_from_this(), context.GetV8Context()->Global());
 }
 
 AdblockPlus::JsValue AdblockPlus::JsEngine::Evaluate(const std::string& source,
     const std::string& filename)
 {
   const JsContext context(*this);
   auto isolate = GetIsolate();
   const v8::TryCatch tryCatch(isolate);
-  v8::MaybeLocal<v8::Script> script = CompileScript(isolate, source, filename);
-  v8::MaybeLocal<v8::Value> result = CHECKED_TO_LOCAL(
-    isolate, script, tryCatch)->Run(isolate->GetCurrentContext());
-  return JsValue(shared_from_this(), CHECKED_TO_LOCAL(isolate, result, tryCatch));
+  auto script = CHECKED_TO_LOCAL(
+    isolate, CompileScript(isolate, source, filename), tryCatch);
+  auto result = CHECKED_TO_LOCAL(
+    isolate, script->Run(isolate->GetCurrentContext()), tryCatch);
+  return JsValue(shared_from_this(), result);
 }
 
 void AdblockPlus::JsEngine::SetEventCallback(const std::string& eventName,
     const AdblockPlus::JsEngine::EventCallback& callback)
 {
   if (!callback)
   {
     RemoveEventCallback(eventName);
     return;
   }
@@ skipping 130 matching lines @@
     list.push_back(JsValue(shared_from_this(), arguments[i]));
   return list;
 }
 
 void AdblockPlus::JsEngine::SetGlobalProperty(const std::string& name,
                                               const AdblockPlus::JsValue& value)
 {
   auto global = GetGlobalObject();
   global.SetProperty(name, value);
 }