[Libreoffice] [REVIEW] trivial PPTX import crash fix

        To avoid a NULL pointer de-reference, don't de-reference a null
pointer :-) I'd like to get this into 3.4.0

        Thanks,

                Michael.

-- 
 michael.meeks@novell.com  <><, Pseudo Engineer, itinerant idiot

From 5194f794f5162d1b27120c281a92f0ca7506b22d Mon Sep 17 00:00:00 2001
From: Michael Meeks <michael.meeks@novell.com>
Date: Thu, 19 May 2011 16:42:44 +0100
Subject: [PATCH] don't de-reference null pointer - fix crash with certain PPTX files

---
 oox/source/ppt/presentationfragmenthandler.cxx |   12 +++++++-----
 1 files changed, 7 insertions(+), 5 deletions(-)

diff --git a/oox/source/ppt/presentationfragmenthandler.cxx 
b/oox/source/ppt/presentationfragmenthandler.cxx
index c18fd4a..cbae082 100644
--- a/oox/source/ppt/presentationfragmenthandler.cxx
+++ b/oox/source/ppt/presentationfragmenthandler.cxx
@@ -246,11 +246,13 @@ void PresentationFragmentHandler::endDocument() throw (SAXException, 
RuntimeExce
                 }
 
                 // importing slide page
-                pSlidePersistPtr->setMasterPersist( pMasterPersistPtr );
-                pSlidePersistPtr->setTheme( pMasterPersistPtr->getTheme() );
-                Reference< drawing::XMasterPageTarget > xMasterPageTarget( 
pSlidePersistPtr->getPage(), UNO_QUERY );
-                if( xMasterPageTarget.is() )
-                    xMasterPageTarget->setMasterPage( pMasterPersistPtr->getPage() );
+                if (pMasterPersistPtr.get()) {
+                    pSlidePersistPtr->setMasterPersist( pMasterPersistPtr );
+                    pSlidePersistPtr->setTheme( pMasterPersistPtr->getTheme() );
+                    Reference< drawing::XMasterPageTarget > xMasterPageTarget( 
pSlidePersistPtr->getPage(), UNO_QUERY );
+                    if( xMasterPageTarget.is() )
+                        xMasterPageTarget->setMasterPage( pMasterPersistPtr->getPage() );
+                }
                 rFilter.getDrawPages().push_back( pSlidePersistPtr );
                 rFilter.setActualSlidePersist( pSlidePersistPtr );
                 importSlide( xSlideFragmentHandler, pSlidePersistPtr );
-- 
1.7.3.4