[hackers] [sbase] Use eprintf() in usage() || sin

[git]

commit d30ac8d64b2e9d76b22b88647688b08491e9b0af
Author: sin <s...@2f30.org>
Date:   Tue Dec 9 16:32:40 2014 +0000

    Use eprintf() in usage()

diff --git a/crond.c b/crond.c
index 2c1dd90..6e12521 100644
--- a/crond.c
+++ b/crond.c
@@ -408,10 +408,7 @@ sighandler(int sig)
 static void
 usage(void)
 {
-       fprintf(stderr, "usage: %s [-f file] [-n]\n", argv0);
-       fprintf(stderr, "  -f   config file\n");
-       fprintf(stderr, "  -n   do not daemonize\n");
-       exit(1);
+       eprintf("usage: %s [-f file] [-n]\n", argv0);
 }
 
 int