OGR Driver GML : bug with gmlReader multiple instanciation/deletion ( using xerces)

[ibibah]

there is a bug in the gmlReader object here:

209	    if( m_nInstanceCount == 0 && m_bXercesInitialized > 0 )
210	    {
211	        XMLPlatformUtils::Terminate();
212	        m_bXercesInitialized = FALSE;   <----- here
213	    }

he's using two global variables to manage xerces initialisation. If, in one session, you're allocate a object , delete them, and reallocate another, m_bXercesInitialized = FALSE instead of -1 like the global initialisation. This result in a crash when whe call NextFeatureXerces() because, SetupParser() and then SetupParserXerces() doesn't allocate the reader and m_poSAXReader == NULL in the code below :

555	        while( m_poCompleteFeature == NULL 
556	               && !m_bStopParsing
557	               && m_poSAXReader->parseNext( m_oToFill ) ) {}

The correction is :

209	    if( m_nInstanceCount == 0 && m_bXercesInitialized > 0 )
210	    {
211	        XMLPlatformUtils::Terminate();
212	        m_bXercesInitialized = -1;   <----- correction
213	    }

Please correct this.

thanks.