Bug 53201 NPE when re-running newly generated javadoc.xml
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/javadocexport/JavadocOptionsManager.java
throw new CoreException(JavaUIStatus.createError(IStatus.ERROR, message, e));
		} finally {
			if (objectStreamOutput != null) {
				try {
					objectStreamOutput.close();
				} catch (IOException e) {
				}
			}
		}
	}
	public void updateDialogSettings(IDialogSettings dialogSettings, IJavaProject[] checkedProjects) {
		IDialogSettings settings= dialogSettings.addNewSection(SECTION_JAVADOC);
		settings.put(FROMSTANDARD, fFromStandard);
		settings.put(DOCLETNAME, fDocletname);
		settings.put(DOCLETPATH, fDocletpath);
		settings.put(VISIBILITY, fAccess);
		settings.put(USE, fUse);
		settings.put(AUTHOR, fAuthor);
		settings.put(VERSION, fVersion);
		settings.put(NODEPRECATED, fNodeprecated);
		settings.put(NODEPRECATEDLIST, fNoDeprecatedlist);
		settings.put(SPLITINDEX, fSplitindex);
		settings.put(NOINDEX, fNoindex);
		settings.put(NOTREE, fNotree);
		settings.put(NONAVBAR, fNonavbar);
		settings.put(OPENINBROWSER, fOpenInBrowser);
		settings.put(SOURCE, fJDK14Mode);
		if (fAntpath.length() != 0) 
			settings.put(ANTPATH, fAntpath);
		if (fDestination.length() != 0)