TQPrintDialog: cleanup data requested from libcups

Signed-off-by: Alexander Golubev <fatzer2@gmail.com>

src/dialogs/qprintdialog.cpp

@@ -796,7 +796,9 @@ static char * parseCupsOutput( TQListView * printers )
     cups_dest_t * d;
     TQLibrary lib( "cups" );
     typedef int (*CupsGetDests)(cups_dest_t **dests);
+    typedef void (*CupsFreeDests)(int num_dents, cups_dest_t *dests);
     CupsGetDests _cupsGetDests = (CupsGetDests)lib.resolve( "cupsGetDests" );
+    CupsFreeDests _cupsFreeDests = (CupsFreeDests)lib.resolve( "cupsFreeDests" );
     if ( _cupsGetDests ) {
 	nd = _cupsGetDests( &d );
 	if ( nd < 1 )
@@ -810,6 +812,9 @@ static char * parseCupsOutput( TQListView * printers )
 		defaultPrinter = tqstrdup( d[n].instance );
 	    n++;
 	}
+	if ( _cupsFreeDests ) {
+	    _cupsFreeDests(nd, d);
+	}
     }
     return defaultPrinter;
 }