[6.0] 636d489e2 Polish

[Dridi Boukelmoune]

commit 636d489e2918fc5db56f817c92c27bc89b18c08e
Author: Federico G. Schwindt <fgsch at lodoss.net>
Date:   Thu May 3 06:32:12 2018 +0200

    Polish

diff --git a/lib/libvarnishapi/vut.c b/lib/libvarnishapi/vut.c
index a34243b61..5a0477053 100644
--- a/lib/libvarnishapi/vut.c
+++ b/lib/libvarnishapi/vut.c
@@ -77,7 +77,7 @@ static void
 vut_vpf_remove(void)
 {
 
-	assert(pfh_vut.magic == VUT_MAGIC);
+	CHECK_OBJ(&pfh_vut, VUT_MAGIC);
 	AN(pfh);
 	AN(pfh_vut.P_arg);