config: set benchmark timer at right point

config/variable_test.go

@@ -7,8 +7,9 @@ import (
 
 func BenchmarkVariableDetectWalker(b *testing.B) {
 	w := new(variableDetectWalker)
-
 	str := reflect.ValueOf(`foo ${var.bar} bar ${bar.baz.bing} $${escaped}`)
+
+	b.ResetTimer()
 	for i := 0; i < b.N; i++ {
 		w.Variables = nil
 		w.Primitive(str)