[master] 9b0b9fa39 Constify

[Poul-Henning Kamp]

commit 9b0b9fa3956e2010759f1161bd22e2beb12dd52c
Author: Poul-Henning Kamp <phk at FreeBSD.org>
Date:   Tue Feb 5 06:32:23 2019 +0000

    Constify

diff --git a/bin/varnishd/cache/cache_director.c b/bin/varnishd/cache/cache_director.c
index 152418d55..a94c36ab5 100644
--- a/bin/varnishd/cache/cache_director.c
+++ b/bin/varnishd/cache/cache_director.c
@@ -278,7 +278,7 @@ struct list_args {
 };
 
 static const char *
-cli_health(VRT_CTX, struct director *d)
+cli_health(VRT_CTX, const struct director *d)
 {
 	VCL_BOOL healthy = VRT_Healthy(ctx, d, NULL);