[7.3] 9b2b3527f vtc: Missing synchronization in t02025

[Dridi Boukelmoune]

commit 9b2b3527ff594c94a1f250d237432aade8cd7d3a
Author: Dridi Boukelmoune <dridi.boukelmoune at gmail.com>
Date:   Wed Oct 18 13:23:15 2023 +0200

    vtc: Missing synchronization in t02025
    
    Noticed while porting #3998 to the 6.0 branch with a varnishtest more
    sensitive to timing.

diff --git a/bin/varnishtest/tests/t02025.vtc b/bin/varnishtest/tests/t02025.vtc
index 3b7e90e8a..578dbf5c8 100644
--- a/bin/varnishtest/tests/t02025.vtc
+++ b/bin/varnishtest/tests/t02025.vtc
@@ -30,11 +30,14 @@ client c1 {
 		barrier b1 sync
 		txrst
 	} -run
+	expect_close
 } -start
 
 logexpect l1 -wait
 barrier b2 sync
 
+client c1 -wait
+
 varnish v1 -vsl_catchup
 varnish v1 -expect req_reset == 1