fdo#60889: FILEOPEN: Incorrect opening XLSX file (sharedStrings.xml)

Change-Id: I2fc39999ecdb13eecc28e012debdeda811e98581
Reviewed-on: https://gerrit.libreoffice.org/5763Reviewed-by: Thomas Arnhold <thomas@arnhold.org>
Reviewed-by: Markus Mohrhard <markus.mohrhard@googlemail.com>
Tested-by: Markus Mohrhard <markus.mohrhard@googlemail.com>

sc/source/filter/oox/workbookfragment.cxx

@@ -213,7 +213,8 @@ void WorkbookFragment::finalizeImport()
     // read the shared string table substream (requires finalized styles buffer)
     OUString aSstFragmentPath = getFragmentPathFromFirstType( CREATE_OFFICEDOC_RELATION_TYPE( "sharedStrings" ) );
     if( !aSstFragmentPath.isEmpty() )
-        importOoxFragment( new SharedStringsFragment( *this, aSstFragmentPath ) );
+        if (!importOoxFragment( new SharedStringsFragment( *this, aSstFragmentPath ) ))
+            importOoxFragment(new SharedStringsFragment(*this, aSstFragmentPath.replaceFirst("sharedStrings","SharedStrings")));
     xGlobalSegment->setPosition( 0.75 );
 
     // read the connections substream