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, 1 insertions, 1 deletions

diff --git a/bin/pax/options.c b/bin/pax/options.c
index 1475e89..c328e79 100644
--- a/bin/pax/options.c
+++ b/bin/pax/options.c
@@ -1256,7 +1256,7 @@ cpio_options(int argc, char **argv)
 			 */
 			maxflt = 0;
 			while ((str = getline(stdin)) != NULL) {
-				ftree_add(str, NULL);
+				ftree_add(str, 0);
 			}
 			if (getline_error) {
 				paxwarn(1, "Problem while reading stdin");