[6.0] 09edd1e72 Tweak the -p test slightly

[Dridi Boukelmoune]

commit 09edd1e7232e3b16b2ed238983261731ab62b252
Author: Poul-Henning Kamp <phk at FreeBSD.org>
Date:   Tue Sep 4 08:50:37 2018 +0000

    Tweak the -p test slightly

diff --git a/bin/varnishtest/tests/u00004.vtc b/bin/varnishtest/tests/u00004.vtc
index 9d2be8ed4..b6015a061 100644
--- a/bin/varnishtest/tests/u00004.vtc
+++ b/bin/varnishtest/tests/u00004.vtc
@@ -39,4 +39,4 @@ shell -err -match "Usage: .*varnishtop <options>" \
 	"varnishtop extra"
 
 shell -err -match "is not a number" \
-	"varnishtop -p ABC"
+	"varnishtop -p 12ABC"