tdf#128659 Cannot add AutoCorrect entries

regression from
    commit 77dec7588c9141b03f8ec0139eb96c298b26f261
    tdf#109158 improve sorting when loading large autocorrect file

The insert operation in the maSortedVector case had the "check for
duplicates" operation the wrong way around

Change-Id: Id8a9d044c661668e74f01eb15635c35ca70da540
Reviewed-on: https://gerrit.libreoffice.org/83344
Tested-by: Xisco FaulĂ­ <xiscofauli@libreoffice.org>
Tested-by: Jenkins
Reviewed-by: Noel Grandin <noel.grandin@collabora.co.uk>
diff --git a/editeng/source/misc/svxacorr.cxx b/editeng/source/misc/svxacorr.cxx
index 48d6676..7e42732 100644
--- a/editeng/source/misc/svxacorr.cxx
+++ b/editeng/source/misc/svxacorr.cxx
@@ -2699,7 +2699,8 @@ const SvxAutocorrWord* SvxAutocorrWordList::Insert(SvxAutocorrWord aWord) const
    else
    {
        auto it = std::lower_bound(mpImpl->maSortedVector.begin(), mpImpl->maSortedVector.end(), aWord, CompareSvxAutocorrWordList());
        if (it != mpImpl->maSortedVector.end() && !CompareSvxAutocorrWordList()(aWord, *it))
        CollatorWrapper& rCmp = ::GetCollatorWrapper();
        if (it == mpImpl->maSortedVector.end() || rCmp.compareString( aWord.GetShort(), it->GetShort() ) != 0)
        {
            it = mpImpl->maSortedVector.insert(it, std::move(aWord));
            return &*it;