[vdr] AIO Fix

["Andy Grobb" <Charly98@01019freenet.de>]

Here is a Fix for AIO 17.07 !!!

in dvbapi.c :

 Lock();
     if ((readIndex = backTrace.Get(playDir == pdForward)) < 0)
        readIndex = writeIndex;
     cRingBufferFrame::Clear();
     still_time = 0;
     SPUdecoder.Empty();
-  //   CHECK(ioctl(videoDev, VIDEO_CLEAR_BUFFER));
-  //   CHECK(ioctl(audioDev, AUDIO_CLEAR_BUFFER));
+     CHECK(ioctl(videoDev, VIDEO_CLEAR_BUFFER));
+     CHECK(ioctl(audioDev, AUDIO_CLEAR_BUFFER));
     }
  if (!Block) {
     blockInput = blockOutput = 0;
     backTrace.Clear();
     Unlock();
     }

This fixed a Bug in connection with TELETEXT Patch 0.6.2, even if no
TELETEXT=1 is compiled !!!!
The Bug created "Artefakte" by jumping with green/yellow Button in Replay
Mode (Recordings,DVD and SVCD).

Andy