make the logexpect in c05.vtc more robust

src/tests/c05.vtc

@@ -112,11 +112,11 @@ client c1 {
 } -run
 
 logexpect l1 -v v1 -d 1 -g vxid -q "VCL_Error" {
-	expect 0 * Begin req
+	expect 0 * Begin bereq
 	expect * = VCL_Error "^vmod re2 error: elevendots\.backref\(12, \"fallback\"\): backref out of range \(max 11\)$"
 	expect * = End
 
-	expect * * Begin req
+	expect 0 * Begin req
 	expect * = VCL_Error "^vmod re2 error: twentydots\.backref\(21, \"error21\"\): backref out of range \(max 20\)$"
 	expect * = End
 } -run