- use EXIT_{SUCCESS,FAILURE}. No object-code changes
diff --git a/loginutils/vlock.c b/loginutils/vlock.c
index 96c1f67..3ce40dd 100644
--- a/loginutils/vlock.c
+++ b/loginutils/vlock.c
@@ -102,5 +102,5 @@
 
 	ioctl(STDIN_FILENO, VT_SETMODE, &ovtm);
 	tcsetattr(STDIN_FILENO, TCSANOW, &oterm);
-	fflush_stdout_and_exit(0);
+	fflush_stdout_and_exit(EXIT_SUCCESS);
 }