sdlog2 fixes

src/modules/sdlog2/sdlog2.c

@@ -484,7 +484,7 @@ void sdlog2_stop_log()
 	warnx("stop logging.");
 	mavlink_log_info(mavlink_fd, "[sdlog2] stop logging");
 
-	logging_enabled = true;
+	logging_enabled = false;
 	logwriter_should_exit = true;
 
 	/* wake up write thread one last time */
@@ -828,6 +828,8 @@ int sdlog2_thread_main(int argc, char *argv[])
 				continue;
 			}
 
+			ifds = 1;	// Begin from fds[1] again
+
 			pthread_mutex_lock(&logbuffer_mutex);
 
 			/* write time stamp message */