sectionsd: cancel TOT thread on shutdown

this helps with spurious hangs on exit / ctrl-C

git-svn-id: file:///home/bas/coolstream_public_svn/THIRDPARTY/applications/neutrino-experimental@764 e54a6e83-5905-42d5-8d5c-058d10e6a962

src/sectionsd/sectionsd.cpp

@@ -8722,6 +8722,8 @@ printf("pausing...\n");
 
         if(dmxUTC) dmxUTC->Stop();
 
+	pthread_cancel(threadTOT);
+
 printf("join 1\n");
         pthread_join(threadTOT, NULL);
         if(dmxUTC) delete dmxUTC;