avoid to use 0 instead of NULL

diff --git a/src/lib/slog.c b/src/lib/slog.c
index 5e3b6f8..d6c4bc2 100644 (file)
--- a/src/lib/slog.c
+++ b/src/lib/slog.c
@@ -176,7 +176,7 @@ static void *slog_routine(void *data)
                sleep(period);
        }
 
-       pthread_exit(0);
+       pthread_exit(NULL);
 }
 
 void slog_close(void)