ContentHandlerDecorator outputs invalid element
-----------------------------------------------

                 Key: TIKA-801
                 URL: https://issues.apache.org/jira/browse/TIKA-801
             Project: Tika
          Issue Type: Bug
    Affects Versions: 1.0, 1.1
            Reporter: Andrzej Bialecki 


* Start Tika GUI
* try opening test-outlook.msg (from tika-parsers test resources)
* the following exception is thrown:
{code}
org.apache.tika.exception.TikaException: Unexpected RuntimeException from 
org.apache.tika.parser.microsoft.OfficeParser@12e14ebc
        at 
org.apache.tika.parser.CompositeParser.parse(CompositeParser.java:245)
        at 
org.apache.tika.parser.CompositeParser.parse(CompositeParser.java:243)
        at 
org.apache.tika.parser.AutoDetectParser.parse(AutoDetectParser.java:120)
        at org.apache.tika.gui.TikaGUI.handleStream(TikaGUI.java:320)
        at org.apache.tika.gui.TikaGUI.openFile(TikaGUI.java:279)
        at org.apache.tika.gui.TikaGUI.actionPerformed(TikaGUI.java:238)
        at 
javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:2028)
        at 
javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2351)
        at 
javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:387)
        at 
javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:242)
        at javax.swing.AbstractButton.doClick(AbstractButton.java:389)
        at 
javax.swing.plaf.basic.BasicMenuItemUI.doClick(BasicMenuItemUI.java:809)
        at com.apple.laf.AquaMenuItemUI.doClick(AquaMenuItemUI.java:137)
        at 
javax.swing.plaf.basic.BasicMenuItemUI$Handler.mouseReleased(BasicMenuItemUI.java:850)
        at java.awt.Component.processMouseEvent(Component.java:6373)
        at javax.swing.JComponent.processMouseEvent(JComponent.java:3267)
        at java.awt.Component.processEvent(Component.java:6138)
        at java.awt.Container.processEvent(Container.java:2085)
        at java.awt.Component.dispatchEventImpl(Component.java:4735)
        at java.awt.Container.dispatchEventImpl(Container.java:2143)
        at java.awt.Component.dispatchEvent(Component.java:4565)
        at 
java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4621)
        at java.awt.LightweightDispatcher.processMouseEvent(Container.java:4282)
        at java.awt.LightweightDispatcher.dispatchEvent(Container.java:4212)
        at java.awt.Container.dispatchEventImpl(Container.java:2129)
        at java.awt.Window.dispatchEventImpl(Window.java:2478)
        at java.awt.Component.dispatchEvent(Component.java:4565)
        at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:679)
        at java.awt.EventQueue.access$000(EventQueue.java:85)
        at java.awt.EventQueue$1.run(EventQueue.java:638)
        at java.awt.EventQueue$1.run(EventQueue.java:636)
        at java.security.AccessController.doPrivileged(Native Method)
        at 
java.security.AccessControlContext$1.doIntersectionPrivilege(AccessControlContext.java:87)
        at 
java.security.AccessControlContext$1.doIntersectionPrivilege(AccessControlContext.java:98)
        at java.awt.EventQueue$2.run(EventQueue.java:652)
        at java.awt.EventQueue$2.run(EventQueue.java:650)
        at java.security.AccessController.doPrivileged(Native Method)
        at 
java.security.AccessControlContext$1.doIntersectionPrivilege(AccessControlContext.java:87)
        at java.awt.EventQueue.dispatchEvent(EventQueue.java:649)
        at 
java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:296)
        at 
java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:211)
        at 
java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:201)
        at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:196)
        at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:188)
        at java.awt.EventDispatchThread.run(EventDispatchThread.java:122)
Caused by: java.lang.NullPointerException
        at 
com.sun.org.apache.xml.internal.serializer.ToHTMLStream.endElement(ToHTMLStream.java:907)
        at 
com.sun.org.apache.xalan.internal.xsltc.trax.TransformerHandlerImpl.endElement(TransformerHandlerImpl.java:273)
        at 
org.apache.tika.sax.ContentHandlerDecorator.endElement(ContentHandlerDecorator.java:136)
        at org.apache.tika.gui.TikaGUI$2.endElement(TikaGUI.java:519)
        at 
org.apache.tika.sax.TeeContentHandler.endElement(TeeContentHandler.java:94)
        at 
org.apache.tika.sax.ContentHandlerDecorator.endElement(ContentHandlerDecorator.java:136)
        at 
org.apache.tika.sax.SecureContentHandler.endElement(SecureContentHandler.java:256)
        at 
org.apache.tika.sax.ContentHandlerDecorator.endElement(ContentHandlerDecorator.java:136)
        at 
org.apache.tika.sax.ContentHandlerDecorator.endElement(ContentHandlerDecorator.java:136)
        at 
org.apache.tika.sax.ContentHandlerDecorator.endElement(ContentHandlerDecorator.java:136)
        at 
org.apache.tika.sax.SafeContentHandler.endElement(SafeContentHandler.java:273)
        at 
org.apache.tika.sax.XHTMLContentHandler.endDocument(XHTMLContentHandler.java:213)
        at 
org.apache.tika.parser.microsoft.OfficeParser.parse(OfficeParser.java:159)
        at 
org.apache.tika.parser.CompositeParser.parse(CompositeParser.java:243)
        ... 44 more
{code}

The same file is parsed without any errors when not in GUI mode.

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