[mythtv] [patch] Recording HDTV when no signal causes segfault

[John Patrick Poet]

With HDTV, the signal strength is checked when tunning to a channel.  
When recording, if the signal strength is too low, the encoder thread is 
never created, but the pthread_join call was still being made.  This 
caused a segfault.

The attached patch prevents the pthread_join call from being made, if 
the encoder thread was not created.

John

-------------- next part --------------
Index: libs/libmythtv/tv_rec.cpp
===================================================================
RCS file: /var/lib/mythcvs/mythtv/libs/libmythtv/tv_rec.cpp,v
retrieving revision 1.148
diff -u -w -r1.148 tv_rec.cpp
--- libs/libmythtv/tv_rec.cpp	21 May 2004 03:39:58 -0000	1.148
+++ libs/libmythtv/tv_rec.cpp	25 May 2004 03:57:51 -0000
@@ -46,6 +46,7 @@
     db_conn = NULL;
     channel = NULL;
     rbuffer = NULL;
+    encode = static_cast<pthread_t>(0);
     nvr = NULL;
     readthreadSock = NULL;
     readthreadlive = false;
@@ -655,6 +656,7 @@
         if (prevRecording && !killFile)
             nvr->GetBlankFrameMap(blank_frame_map);
 
+        if(encode)
         pthread_join(encode, NULL);
         delete nvr;
     }