forcepoint#85 Conditional jump or move depends on uninitialised value

forcepoint#85 Conditional jump or move depends on uninitialised value

==398461==    by 0xCDC7960: (anonymous namespace)::CopyUntil(char16_t*&, char16_t const*&, char16_t, bool) (strhelper.cxx:88)
==398461==    by 0xCDC839F: psp::WhitespaceToSpace(rtl::OUString const&, bool) (strhelper.cxx:294)
==398461==    by 0xCB54980: vcl::PDFWriterImpl::setOutlineItemText(int, rtl::OUString const&) (pdfwriter_impl.cxx:9875)
==398461==    by 0xCB547FF: vcl::PDFWriterImpl::createOutlineItem(int, rtl::OUString const&, int) (pdfwriter_impl.cxx:9851)
==398461==    by 0xCAF39B0: vcl::PDFWriter::CreateOutlineItem(int, rtl::OUString const&, int) (pdfwriter.cxx:383)
==398461==    by 0xCABD7C8: vcl::GlobalSyncData::PlayGlobalActions(vcl::PDFWriter&) (pdfextoutdevdata.cxx:250)
==398461==    by 0xCAC0628: vcl::PDFExtOutDevData::PlayGlobalActions(vcl::PDFWriter&) (pdfextoutdevdata.cxx:616)
==398461==    by 0x3D06EA0F: PDFExport::Export(rtl::OUString const&, com::sun::star::uno::Sequence<com::sun::star::beans::PropertyValue> const&) (pdfexport.cxx:1004)

Change-Id: I6bc086997851ee06531a4a9ae263e2b26edfba84
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/132035
Tested-by: Jenkins
Reviewed-by: Xisco Fauli <xiscofauli@libreoffice.org>