[master] eef2c9fce r01506.vtc: stabilize

[Nils Goroll]

commit eef2c9fce78cf1931918ac69e077f58d423b8f28
Author: Nils Goroll <nils.goroll at uplex.de>
Date:   Wed Aug 27 16:49:31 2025 +0200

    r01506.vtc: stabilize
    
    stop varnish before shutting down a server which it might still be using.
    
    See https://github.com/varnishcache/varnish-cache/pull/4078#issuecomment-3228317852

diff --git a/bin/varnishtest/tests/r01506.vtc b/bin/varnishtest/tests/r01506.vtc
index c2e3d481e..9074dab41 100644
--- a/bin/varnishtest/tests/r01506.vtc
+++ b/bin/varnishtest/tests/r01506.vtc
@@ -68,4 +68,5 @@ client c1 {
 } -run
 
 varnish v1 -expect sc_range_short == 0
+varnish v1 -stop
 server s1 -wait