Rework all non-contributed files that use `struct timezone'.

This structure is not part of POSIX. According to POSIX, gettimeofday()
has the following prototype:

	int gettimeofday(struct timeval *restrict tp, void *restrict tzp);

Also, POSIX states that gettimeofday() shall return 0 (as long as tzp is
not used). Remove dead error handling code. Also use NULL for a
nul-pointer instead of integer 0.

While there, change all pieces of code that only use tv_sec to use
time(3), as this provides less overhead.

1 files changed, 1 insertions, 1 deletions

diff --git a/usr.sbin/timed/timedc/cmds.c b/usr.sbin/timed/timedc/cmds.c
index b778b1a..84740f6 100644
--- a/usr.sbin/timed/timedc/cmds.c
+++ b/usr.sbin/timed/timedc/cmds.c
@@ -131,7 +131,7 @@ daydiff(hostname)
 			}
 			sec -= BU;
 
-			(void)gettimeofday(&now, (struct timezone*)0);
+			(void)gettimeofday(&now, NULL);
 			return (sec - now.tv_sec);
 		}
 	}