_SetGetExpFlds: this looks simpler with upper_bound

Change-Id: I37dd291aaa229493141fbb8b426488e8e4427185
diff --git a/sw/source/core/doc/docfld.cxx b/sw/source/core/doc/docfld.cxx
index 6f1fdf6..aa5156e 100644
--- a/sw/source/core/doc/docfld.cxx
+++ b/sw/source/core/doc/docfld.cxx
@@ -1106,12 +1106,10 @@ void SwDoc::FldsToCalc( SwCalc& rCalc, const _SetGetExpFld& rToThisFld )

    if( !pUpdtFlds->GetSortLst()->empty() )
    {
        _SetGetExpFlds::const_iterator itLast = pUpdtFlds->GetSortLst()->lower_bound( (_SetGetExpFld*)&rToThisFld );
        if (pUpdtFlds->GetSortLst()->end() != itLast && **itLast == rToThisFld)
        {
            ++itLast;
        }

        _SetGetExpFlds::const_iterator const itLast = std::upper_bound(
                pUpdtFlds->GetSortLst()->begin(),
                pUpdtFlds->GetSortLst()->end(),
                const_cast<_SetGetExpFld*>(&rToThisFld));
        for( _SetGetExpFlds::const_iterator it = pUpdtFlds->GetSortLst()->begin(); it != itLast; ++it )
            lcl_CalcFld( *this, rCalc, **it, pMgr );
    }
@@ -1154,14 +1152,10 @@ void SwDoc::FldsToExpand( SwHash**& ppHashTbl, sal_uInt16& rTblSize,
    ppHashTbl = new SwHash*[ rTblSize ];
    memset( ppHashTbl, 0, sizeof( _HashStr* ) * rTblSize );

    _SetGetExpFlds::const_iterator itLast;
    {
        itLast = pUpdtFlds->GetSortLst()->lower_bound( (_SetGetExpFld*)&rToThisFld );
        if (pUpdtFlds->GetSortLst()->end() != itLast && **itLast == rToThisFld)
        {
            ++itLast;
        }
    }
    _SetGetExpFlds::const_iterator const itLast = std::upper_bound(
        pUpdtFlds->GetSortLst()->begin(),
        pUpdtFlds->GetSortLst()->end(),
        const_cast<_SetGetExpFld*>(&rToThisFld));

    for( _SetGetExpFlds::const_iterator it = pUpdtFlds->GetSortLst()->begin(); it != itLast; ++it )
    {