WebHistory triggers NPE when loading some sites.

E.g., try to load http://shaman.russia.sun.com

The following exception will be thrown:
java.lang.NullPointerException
at javafx.scene.web.WebHistory$Entry$1.stateChanged(WebHistory.java:68)
at com.sun.webpane.platform.BackForwardList$Entry.notifyItemChanged(BackForwardList.java:64)
at com.sun.webpane.webkit.network.URLLoader.twkDidReceiveData(Native Method)
at com.sun.webpane.webkit.network.URLLoader.access$1200(URLLoader.java:42)
at com.sun.webpane.webkit.network.URLLoader$5.run(URLLoader.java:640)
at com.sun.glass.ui.win.WinApplication._runLoop(Native Method)
at com.sun.glass.ui.win.WinApplication.access$100(WinApplication.java:29)
at com.sun.glass.ui.win.WinApplication$2$1.run(WinApplication.java:62)
at java.lang.Thread.run(Thread.java:722)