varnishevent: - bugfix stats

	- reader thread takes the freelist before running

bin/varnishevent/varnishevent.c

@@ -207,6 +207,7 @@ fd_free(fd_t *entry)
     VTAILQ_REMOVE(&insert_head, entry, insert_list);
     entry->state = FD_EMPTY;
     entry->ll = NULL;
+    open--;
 }
 
 static inline void
@@ -607,6 +608,10 @@ main(int argc, char *argv[])
         LOG_Log(LOG_ALERT, "Cannot init writer thread: %s\n", strerror(errnum));
         exit(EXIT_FAILURE);
     }
+
+    rdr_free = DATA_Take_Freelist(&reader_freelist);
+    assert(!VSTAILQ_EMPTY(&reader_freelist));
+    AZ(rdr_free);
     
     WRT_Start();
     /* XXX: configure wrt_waits and sleep interval? */