fix for empty paragraphs

Change-Id: I0a7432059d5e6f680d4fe2e3cac0f12062533511
Reviewed-on: https://gerrit.libreoffice.org/46100Reviewed-by: Tamás Bunth <btomi96@gmail.com>
Tested-by: Tamás Bunth <btomi96@gmail.com>

sw/source/filter/ww8/wrtw8nds.cxx

@@ -2281,7 +2281,9 @@ void MSWordExportBase::OutputTextNode( SwTextNode& rNode )
     do
     {
         sal_Int32 nAktPos = *aBreakIt;
-        ++aBreakIt;
+
+        if( softBreakList.size() > 1 ) // not for empty paragpraph
+            ++aBreakIt;
 
         AttrOutput().StartParagraph( pTextNodeInfo );