FindLstn doesn't return if no devices found.

I'm trying to use FindLstn to query the GPIB.
When a device is found, things work as expected but if there are no devices connected to the controller ( HP 82357b ) FindLstn hangs.

I'm using the latest SVN branch.

Is this correct behavior ?  

Michael

#define MAX_PRIMARY_DEVICES               30
#define MAX_SECONDARY_DEVICES        10

Addr4882_t deviceList[ MAX_PRIMARY_DEVICES + 1 ] = {};
 Addr4882_t resultList[ MAX_PRIMARY_DEVICES * MAX_SECONDARY_DEVICES ] = {};
 
GPIBdevice devices[] = {
        { A4882( ADDR_HP8753C, 0 ),                "HP8753C",        { FALSE } },
        { A4882( ADDR_HP33401A_MULTIMETER, 0 ),    "HP33401A Multimeter",    { FALSE } }
};


gint MAX_ENUMERATED_DEVICES = ((sizeof( devices ) / sizeof( GPIBdevice )));

        for( i=0; i < MAX_PRIMARY_DEVICES + 1; i++ ) {
            if( i < MAX_ENUMERATED_DEVICES )
                deviceList[ i ] = devices[i].GPIBaddress;
            else
                deviceList[ i ] = NOADDR;
        }

        FindLstn( descGPIBcontroller, deviceList, resultList, MAX_PRIMARY_DEVICES * MAX_SECONDARY_DEVICES);

// Never gets here unless a device responds


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