n#757651 vcl: sync GenericSalLayout and SimpleWinLayout with MultiSalLayout

These are all derived from the SalLayout interface, with a similar
GetTextBreak() implementation. MultiSalLayout didn't break text that had
exactly the same length as the available space, the other two did. Fix
this inconsistency.

Change-Id: Icd9a81e039492bee82c28b8d8582e3a161dfd283

vcl/source/gdi/sallayout.cxx

@@ -1263,7 +1263,7 @@ int GenericSalLayout::GetTextBreak( long nMaxWidth, long nCharExtra, int nFactor
     for( int i = mnMinCharPos; i < mnEndCharPos; ++i )
     {
         nWidth += pCharWidths[ i - mnMinCharPos ] * nFactor;
-        if( nWidth >= nMaxWidth )
+        if( nWidth > nMaxWidth )
             return i;
         nWidth += nCharExtra;
     }

vcl/win/source/gdi/winlayout.cxx

@@ -721,7 +721,7 @@ int SimpleWinLayout::GetTextBreak( long nMaxWidth, long nCharExtra, int nFactor
             continue;
         // add char widths until max
         nExtraWidth += mpCharWidths[ n ] * nFactor;
-        if( nExtraWidth >= nMaxWidth )
+        if( nExtraWidth > nMaxWidth )
             return (mnMinCharPos + n);
         nExtraWidth += nCharExtra;
     }