Make NULL a (void*)0 whereever possible, and fix the warnings(-Werror)

that this provokes. "Wherever possible" means "In the kernel OR NOT
C++" (implying C).

There are places where (void *) pointers are not valid, such as for
function pointers, but in the special case of (void *)0, agreement
settles on it being OK.

Most of the fixes were NULL where an integer zero was needed; many
of the fixes were NULL where ascii <nul> ('\0') was needed, and a
few were just "other".

Tested on: i386 sparc64

1 files changed, 2 insertions, 2 deletions

diff --git a/lib/libc/net/gethostbydns.c b/lib/libc/net/gethostbydns.c
index 82f5152..534073a 100644
--- a/lib/libc/net/gethostbydns.c
+++ b/lib/libc/net/gethostbydns.c
@@ -591,11 +591,11 @@ _dns_gethostbyname(void *rval, void *cb_data, va_list ap)
 	if (n < 0) {
 		free(buf);
 		dprintf("res_search failed (%d)\n", n);
-		return (NULL);
+		return (0);
 	} else if (n > sizeof(buf->buf)) {
 		free(buf);
 		dprintf("static buffer is too small (%d)\n", n);
-		return (NULL);
+		return (0);
 	}
 	*(struct hostent **)rval = gethostanswer(buf, n, name, type);
 	free(buf);