same as mandocdb.c rev. 1.196:

for portability, use (char *)NULL in execlp(3) as discussed on tech@
OpenBSD (didn't blow up anywhere yet, but better safe than sorry)

1 files changed, 3 insertions, 2 deletions

diff --git a/catman.c b/catman.c
index f9970dad..848d34d4 100644
--- a/catman.c
+++ b/catman.c
@@ -61,10 +61,11 @@ run_mandocd(int sockfd, const char *outtype, const char* defos)
 	if (snprintf(sockfdstr, sizeof(sockfdstr), "%d", sockfd) == -1)
 		err(1, "snprintf");
 	if (defos == NULL)
-		execlp("mandocd", "mandocd", "-T", outtype, sockfdstr, NULL);
+		execlp("mandocd", "mandocd", "-T", outtype,
+		    sockfdstr, (char *)NULL);
 	else
 		execlp("mandocd", "mandocd", "-T", outtype,
-		    "-I", defos, sockfdstr, NULL);
+		    "-I", defos, sockfdstr, (char *)NULL);
 	err(1, "exec");
 }