s/[Nn]ull/NUL/ in comments where appropriate;

suggested by Thomas Klausner <wiz @ NetBSD dot org>.

1 files changed, 1 insertions, 1 deletions

diff --git a/roff.c b/roff.c
index 2f3d1498..1a348dea 100644
--- a/roff.c
+++ b/roff.c
@@ -1733,7 +1733,7 @@ roff_userdef(ROFF_ARGS)
 
 	/*
 	 * Collect pointers to macro argument strings
-	 * and null-terminate them.
+	 * and NUL-terminate them.
 	 */
 	cp = *bufp + pos;
 	for (i = 0; i < 9; i++)