Shall this produce a string representation of a number?

On the one hand, the code had apparently treated nIdx as a sal_Unicode character
value ever since its inception in e7189508 "new
querydesign."  On the other hand, the preceding BROW_VIS_ROW case does produce
strings "0" and "1".

Change-Id: Ife6e98ba32146cc469b722fa4f013c12152b5505

dbaccess/source/ui/querydesign/SelectionBrowseBox.cxx

@@ -2245,7 +2245,7 @@ OUString OSelectionBrowseBox::GetCellContents(sal_Int32 nCellIndex, sal_uInt16 n
             sal_Int32 nIdx = m_pOrderCell->GetSelectEntryPos();
             if (nIdx == LISTBOX_ENTRY_NOTFOUND)
                 nIdx = 0;
-            return OUString(nIdx);
+            return OUString::number(nIdx);
         }
         default:
             return GetCellText(nCellIndex, nColId);