tdf#114919: fix ods export in ODF 1.2 strict

See Valgrind trace here:
https://bugs.documentfoundation.org/attachment.cgi?id=147891
which contains bt

Due to a8b7c72425aabae87bfd2e141aa06f06319ae11c
"
add error to office:value-type for calc cells and fdo#51810
For cached value import we need the information which cells are error
cells. For ODF 1.2 extended we therefore export now calcext:office-value
with the additional value "error".
"

Change-Id: I13547ecc7ef8c1c4e1a236229d3b19d51f12470b
Reviewed-on: https://gerrit.libreoffice.org/65728
Tested-by: Jenkins
Reviewed-by: Julien Nabet <serval2412@yahoo.fr>
diff --git a/sc/source/filter/xml/xmlexprt.cxx b/sc/source/filter/xml/xmlexprt.cxx
index a71d2ff..fc61bd6 100644
--- a/sc/source/filter/xml/xmlexprt.cxx
+++ b/sc/source/filter/xml/xmlexprt.cxx
@@ -3248,7 +3248,7 @@
                        {
                            GetNumberFormatAttributesExportHelper()->SetNumberFormatAttributes(
                                    aCell.nNumberFormat, pDoc->GetValue(aCell.maCellAddress));
                            if( getDefaultVersion() >= SvtSaveOptions::ODFVER_012 )
                            if( getDefaultVersion() > SvtSaveOptions::ODFVER_012 )
                            {
                                GetNumberFormatAttributesExportHelper()->SetNumberFormatAttributes(
                                        aCell.nNumberFormat, pDoc->GetValue(aCell.maCellAddress), false, XML_NAMESPACE_CALC_EXT, false );