cppcheck: unreadVariable

Change-Id: I109e5f36a524e2996d00bf81e873776d0d738011
diff --git a/connectivity/source/drivers/dbase/DTable.cxx b/connectivity/source/drivers/dbase/DTable.cxx
index 3d10573..fe0750e 100644
--- a/connectivity/source/drivers/dbase/DTable.cxx
+++ b/connectivity/source/drivers/dbase/DTable.cxx
@@ -2432,7 +2432,7 @@ void ODbaseTable::addColumn(const Reference< XPropertySet >& _xNewColumn)
        pNewTable->renameImpl(m_Name);
        // release the temp file
    }
    xHold = pNewTable = NULL;
    xHold.clear();

    FileClose();
    construct();