Fullscrape now cleanly finalizes its thread

ot_fullscrape.c

@@ -52,11 +52,15 @@ static void * fullscrape_worker( void * args) {
   return NULL;
 }
 
+static pthread_t thread_id;
 void fullscrape_init( ) {
-  pthread_t thread_id;
   pthread_create( &thread_id, NULL, fullscrape_worker, NULL );
 }
 
+void fullscrape_deinit( ) {
+  pthread_cancel( thread_id );
+}
+
 void fullscrape_deliver( int64 socket, ot_tasktype tasktype ) {
   mutex_workqueue_pushtask( socket, tasktype );
 }

ot_fullscrape.h

@@ -8,6 +8,7 @@
 #include "ot_mutex.h"
 
 void fullscrape_init( );
+void fullscrape_deinit( );
 void fullscrape_deliver( int64 socket, ot_tasktype tasktype );
 
 #endif