OKeySet::refreshRow: Invalidate m_xRow/m_xSet when BeforeFirst or AfterLast

Change-Id: I0f48c099eddc077b2a89e3b7fab66b5da55b57c8

dbaccess/source/core/api/KeySet.cxx

@@ -1334,12 +1334,13 @@ bool OKeySet::doTryRefetch_throw()  throw(SQLException, RuntimeException)
 void SAL_CALL OKeySet::refreshRow() throw(SQLException, RuntimeException)
 {
     RTL_LOGFILE_CONTEXT_AUTHOR( aLogger, "dbaccess", "Ocke.Janssen@sun.com", "OKeySet::refreshRow" );
-    if(isBeforeFirst() || isAfterLast() || !m_xStatement.is())
-        return;
 
     m_xRow = NULL;
     ::comphelper::disposeComponent(m_xSet);
 
+    if(isBeforeFirst() || isAfterLast() || !m_xStatement.is())
+        return;
+
     if ( m_aKeyIter->second.second.second.is() )
     {
         m_xRow = m_aKeyIter->second.second.second;