Block execution of failed 'crossorigin' <script>s.

Source/core/xml/parser/XMLDocumentParser.cpp

Index: Source/core/xml/parser/XMLDocumentParser.cpp
diff --git a/Source/core/xml/parser/XMLDocumentParser.cpp b/Source/core/xml/parser/XMLDocumentParser.cpp
index f4c4ed818320cd5f7e6c0b2638ef6e5df0decdbc..d07e642813c508f7a2f2fa7f08d31099048ffafc 100644
--- a/Source/core/xml/parser/XMLDocumentParser.cpp
+++ b/Source/core/xml/parser/XMLDocumentParser.cpp
@@ -474,8 +474,8 @@ void XMLDocumentParser::notifyFinished(Resource* unusedResource)
     if (errorOccurred)
         scriptLoader->dispatchErrorEvent();
     else if (!wasCanceled) {
-        scriptLoader->executeScript(sourceCode);
-        scriptLoader->dispatchLoadEvent();
+        if (scriptLoader->executePotentiallyCrossOriginScript(sourceCode))
+            scriptLoader->dispatchLoadEvent();
     }
 
     m_scriptElement = 0;