[vdr] [OsdTeletext] detach receiver for VDR 1.7.25

[Andreas Brachold]

Hello Udo,  

Your patch looks like a dirty hack, but it works here. ;-)

But there is a small syntax error at #ifdef

It should be :
----------------------------------
#if VDRVERSNUM >= 10725
   // Disconnect receiver if channel is 0, will reconnect to new
   // receiver after channel change.
   if (ChannelNumber == 0 && Device->IsPrimaryDevice()) {
      if(receiver)
          delete receiver;
      receiver = NULL;
   }
#endif
----------------------------------

Regards,
Andreas