dash: Ignore representations without valid segments.

Signed-off-by: Jean-Baptiste Kempf <jb@videolan.org>

modules/stream_filter/dash/mpd/BasicCMParser.cpp

@@ -89,6 +89,7 @@ void    BasicCMParser::setRepresentations   (Node *root, Group *group)
     {
         Representation *rep = new Representation(representations.at(i)->getAttributes());
         this->setSegmentInfo(representations.at(i), rep);
+        if ( rep->getSegmentInfo() && rep->getSegmentInfo()->getSegments().size() > 0 )
             group->addRepresentation(rep);
     }
 }