Use already available index in following getToken call

Change-Id: I1617af942d59c59039e97400a8c39bbc36c3bceb
Reviewed-on: https://gerrit.libreoffice.org/68124
Tested-by: Jenkins
Reviewed-by: Matteo Casalin <matteo.casalin@yahoo.com>

sc/source/core/data/documen4.cxx

@@ -1168,8 +1168,7 @@ void ScDocument::CompareDocument( ScDocument& rOtherDoc )
             sal_Int32 nIndex = 0;
             OUStringBuffer aProText = aTemplate.getToken( 0, '#', nIndex );
             aProText.append(aTabName);
-            nIndex = 0;
-            aProText.append(aTemplate.getToken( 1, '#', nIndex ));
+            aProText.append(aTemplate.getToken( 0, '#', nIndex ));
             ScProgress aProgress( GetDocumentShell(),
                                         aProText.makeStringAndClear(), 3*nThisEndRow, true );  // 2x FindOrder, 1x here
             long nProgressStart = 2*nThisEndRow;                    // start for here