Empty object@data url shouldn't be resolved and loaded

Source/core/html/HTMLPlugInElement.cpp

Index: Source/core/html/HTMLPlugInElement.cpp
diff --git a/Source/core/html/HTMLPlugInElement.cpp b/Source/core/html/HTMLPlugInElement.cpp
index 415416b311a57f8a0efc67bbcb3c3e3d7c4a82c8..6ec3d2cbf3362231f76908c71ff80e8817373ceb 100644
--- a/Source/core/html/HTMLPlugInElement.cpp
+++ b/Source/core/html/HTMLPlugInElement.cpp
@@ -501,7 +501,7 @@ bool HTMLPlugInElement::requestObject(const String& url, const String& mimeType,
     if (protocolIsJavaScript(url))
         return false;
 
-    KURL completedURL = document().completeURL(url);
+    KURL completedURL = url.isEmpty() ? KURL() : document().completeURL(url);
     if (!pluginIsLoadable(completedURL, mimeType))
         return false;