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, 2 insertions, 2 deletions

diff --git a/bin/dd/dd.c b/bin/dd/dd.c
index 0bb43f7..637e0cc 100644
--- a/bin/dd/dd.c
+++ b/bin/dd/dd.c
@@ -232,8 +232,8 @@ setup(void)
 		ctab = casetab;
 	}
 
-	(void)gettimeofday(&tv, (struct timezone *)NULL);
-	st.start = tv.tv_sec + tv.tv_usec * 1e-6; 
+	(void)gettimeofday(&tv, NULL);
+	st.start = tv.tv_sec + tv.tv_usec * 1e-6;
 }
 
 static void