[vdr] [PATCH vdr-xine] Fix xine-lib segfault if vdr isn't running

[Darren Salt <linux@youmustbejoking.demon.co.uk>]

The attached patch stops xine-lib from segfaulting if it can't talk to vdr
(e.g. if vdr isn't running).

-- 
| Darren Salt | d youmustbejoking,demon,co,uk | nr. Ashington,
| Debian,     | s zap,tartarus,org            | Northumberland
| RISC OS     | @                             | Toon Army
|   I don't ask for much, just untold riches...

6 Number too big, 0:1
--- xine-lib/src/vdr/input_vdr.c~
+++ xine-lib/src/vdr/input_vdr.c
@@ -1341,11 +1341,14 @@
 
   if (this->eventQueue)
     xine_event_dispose_queue(this->eventQueue);
-  
-  xprintf(this->stream->xine, XINE_VERBOSITY_LOG, _("VDR: stopping control thread...\n"));
-  pthread_cancel(this->threadControl);
-  pthread_join(this->threadControl, NULL);
-  xprintf(this->stream->xine, XINE_VERBOSITY_LOG, _("VDR: control thread terminated\n"));
+
+  if (this->threadControl)
+  {
+    xprintf(this->stream->xine, XINE_VERBOSITY_LOG, _("VDR: stopping control thread...\n"));
+    pthread_cancel(this->threadControl);
+    pthread_join(this->threadControl, NULL);
+    xprintf(this->stream->xine, XINE_VERBOSITY_LOG, _("VDR: control thread terminated\n"));
+  }
 
   if (this->fhResult != -1)
     close(this->fhResult);