Hyperlink error on tutorial page click

[rupeshkumar22]

Faced an error while trying to open a tutorial hyperlink mentioned in the dialog box.

Exception in thread "AWT-EventQueue-0" java.lang.NullPointerException
	at processing.mode.android.AndroidUtil$1.hyperlinkUpdate(AndroidUtil.java:78)
	at javax.swing.JEditorPane.fireHyperlinkUpdate(JEditorPane.java:342)

[rupeshkumar22]

I think this is the duplicate of #436

[codeanticode]

Fixed with 812b835