[master] d035171 document it before the next person stumbles over it

[Nils Goroll]

commit d0351710d38fc78dde7ef16022dc14dc19c5ba99
Author: Nils Goroll <nils.goroll at uplex.de>
Date:   Wed Sep 7 11:33:30 2016 +0200

    document it before the next person stumbles over it

diff --git a/bin/varnishd/cache/cache_vcl.c b/bin/varnishd/cache/cache_vcl.c
index e213010..d174e75 100644
--- a/bin/varnishd/cache/cache_vcl.c
+++ b/bin/varnishd/cache/cache_vcl.c
@@ -514,6 +514,10 @@ VRT_rel_vcl(VRT_CTX, struct vclref **refp)
 
 /*--------------------------------------------------------------------*/
 
+/*
+ * the workspace allocated here exists for the lifetime of the varnishd process
+ * and is never explicitly freed
+ */
 static struct ws *
 vcl_event_ws(void)
 {