Use EXIT_FAILURE, not EXIT_FAIL, now that EXIT_FAILURE is always 1.

* src/system.h (EXIT_FAIL): Remove definition.
* src/chroot.c (main): EXIT_FAIL -> EXIT_FAILURE.
* src/env.c (main): Likewise.
* src/nice.c (main): Likewise.
* src/su.c (change_identity, main): Likewise.
* src/tty.c (main): Likewise.
Suggestion from Eric Blake.

1 files changed, 1 insertions, 1 deletions

diff --git a/src/tty.c b/src/tty.c
index c7bdb77c1..0a3809337 100644
--- a/src/tty.c
+++ b/src/tty.c
@@ -124,5 +124,5 @@ main (int argc, char **argv)
 	puts (_("not a tty"));
     }
 
-  exit (isatty (STDIN_FILENO) ? EXIT_SUCCESS : EXIT_FAIL);
+  exit (isatty (STDIN_FILENO) ? EXIT_SUCCESS : EXIT_FAILURE);
 }