Check explicitily the space at the end of the line

Can be bugous when the last character not a space.
I don't have any real life examples, just some extreme
-Line break is inside a word without hyphenation
-A tabulator follow the last character of the line and so
this tabulator get to the next line.

Change-Id: I3c5d372295b960a5cc22c19ada382d0a995787cc
diff --git a/sw/source/core/text/itrcrsr.cxx b/sw/source/core/text/itrcrsr.cxx
index a162a24..42ab844 100644
--- a/sw/source/core/text/itrcrsr.cxx
+++ b/sw/source/core/text/itrcrsr.cxx
@@ -1259,7 +1259,7 @@ xub_StrLen SwTxtCursor::GetCrsrOfst( SwPosition *pPos, const Point &rPoint,
    // If necessary, as catch up, do the adjustment
    GetAdjusted();

    const XubString &rText = GetInfo().GetTxt();
    const OUString &rText = GetInfo().GetTxt();
    xub_StrLen nOffset = 0;

    // x is the horizontal offset within the line.
@@ -1452,7 +1452,7 @@ xub_StrLen SwTxtCursor::GetCrsrOfst( SwPosition *pPos, const Point &rPoint,
            ( pPor->IsMarginPortion() && !pPor->GetPortion() &&
              // 46598: Consider the situation: We might end up behind the last character,
              // in the last line of a centered paragraph
              nCurrStart < rText.Len() ) )
              nCurrStart < rText.getLength() ) )
            --nCurrStart;
        else if( pPor->InFldGrp() && ((SwFldPortion*)pPor)->IsFollow()
                 && nWidth > nX )
@@ -1523,7 +1523,9 @@ xub_StrLen SwTxtCursor::GetCrsrOfst( SwPosition *pPos, const Point &rPoint,
        }
    }

    if( bLastPortion && (pCurr->GetNext() || pFrm->GetFollow() ) )
    // Skip space at the end of the line
    if( bLastPortion && (pCurr->GetNext() || pFrm->GetFollow() )
        && rText[nCurrStart + nLength - 1] == ' ' )
        --nLength;

    if( nWidth > nX ||
@@ -1592,8 +1594,7 @@ xub_StrLen SwTxtCursor::GetCrsrOfst( SwPosition *pPos, const Point &rPoint,
            else
                nOldProp = 0;
            {
                OUString aText = rText;
                SwTxtSizeInfo aSizeInf( GetInfo(), &aText, nCurrStart );
                SwTxtSizeInfo aSizeInf( GetInfo(), &rText, nCurrStart );
                ((SwTxtCursor*)this)->SeekAndChg( aSizeInf );
                SwTxtSlot aDiffTxt( &aSizeInf, ((SwTxtPortion*)pPor), false, false );
                SwFontSave aSave( aSizeInf, pPor->IsDropPortion() ?