in a cellRangeAddress single quotes are escaped by doubling them

... and not by prefixing them with a backslash, geez..

Change-Id: Ic088967fc2d9004ab5cc8d917253cc262edba7c9

sc/source/filter/xml/XMLConverter.cxx

@@ -286,7 +286,7 @@ void ScXMLConverter::ConvertCellRangeAddress(OUString& sFormula)
     sal_Unicode chPrevious('=');
     for (sal_Int32 i = 0; i < sFormula.getLength(); ++i)
     {
-        if (sFormula[i] == '\'' && chPrevious != '\\')
+        if (sFormula[i] == '\'')
             bInQuotationMarks = !bInQuotationMarks;
         if (bInQuotationMarks)
             sBuffer.append(sFormula[i]);