[master] 5ec2db924 The GCC people are getting ridiculous.

[Poul-Henning Kamp]

commit 5ec2db924defb1c3c53700c457de34e072aee238
Author: Poul-Henning Kamp <phk at FreeBSD.org>
Date:   Fri Feb 8 12:17:04 2019 +0000

    The GCC people are getting ridiculous.

diff --git a/bin/varnishtest/vtc_main.c b/bin/varnishtest/vtc_main.c
index 196dd9202..1a7fa98a2 100644
--- a/bin/varnishtest/vtc_main.c
+++ b/bin/varnishtest/vtc_main.c
@@ -242,7 +242,8 @@ cleaner_setup(void)
 			pp = fork();
 			assert(pp >= 0);
 			if (pp == 0)
-				exit(execl("/bin/rm", "rm", "-rf", buf, NULL));
+				exit(execl(
+				    "/bin/rm", "rm", "-rf", buf, (char*)0));
 			assert(waitpid(pp, &st, 0) == pp);
 			AZ(st);
 		}