Fix leaks when the shared worker is requested to be terminated while loading the main script.

Source/web/WebSharedWorkerImpl.cpp

Index: Source/web/WebSharedWorkerImpl.cpp
diff --git a/Source/web/WebSharedWorkerImpl.cpp b/Source/web/WebSharedWorkerImpl.cpp
index 26bf424af4d35d9f31903a5aadbac66b2d246068..4b5cdf6086872ccb64fbe05fcc25191471a1bce8 100644
--- a/Source/web/WebSharedWorkerImpl.cpp
+++ b/Source/web/WebSharedWorkerImpl.cpp
@@ -182,6 +182,10 @@ void WebSharedWorkerImpl::stopWorkerThread()
     if (m_mainScriptLoader) {
         m_mainScriptLoader->cancel();
         m_mainScriptLoader.clear();
+        if (client())
+            client()->workerScriptLoadFailed();
+        delete this;
+        return;
     }
     if (m_workerThread)
         m_workerThread->stop();
@@ -347,17 +351,16 @@ void WebSharedWorkerImpl::onScriptLoaderFinished()
 {
     ASSERT(m_loadingDocument);
     ASSERT(m_mainScriptLoader);
-    if (m_mainScriptLoader->failed() || m_askedToTerminate) {
+    if (m_askedToTerminate)
+        return;
+    if (m_mainScriptLoader->failed()) {
         m_mainScriptLoader->cancel();
         if (client())
             client()->workerScriptLoadFailed();
 
         // The SharedWorker was unable to load the initial script, so
-        // shut it down right here unless we're here handling a load
-        // cancellation failure triggered by an explicit shared worker
-        // termination call (via terminateWorkerContext().)
-        if (!m_askedToTerminate)
-            delete this;
+        // shut it down right here.
+        delete this;
         return;
     }
     WorkerThreadStartMode startMode = m_pauseWorkerContextOnStart ? PauseWorkerGlobalScopeOnStart : DontPauseWorkerGlobalScopeOnStart;