fix(policy/checker): more explicit short-circuit

Signed-off-by: Xe Iaso <me@xeiaso.net>

lib/policy/checker/checker.go

@@ -20,8 +20,6 @@ type List []Impl
 // It returns true only if *all* checkers return true (AND semantics).
 // If any checker returns an error, the function returns false and the error.
 func (l List) Check(r *http.Request) (bool, error) {
-	// Assume success until a checker says otherwise.
-	allOk := true
 	for _, c := range l {
 		ok, err := c.Check(r)
 		if err != nil {
@@ -31,11 +29,11 @@ func (l List) Check(r *http.Request) (bool, error) {
 		if !ok {
 			// One false means the combined result is false. Short-circuit
 			// so we don't waste time.
-			allOk = false
-			break
+			return false, err
 		}
 	}
-	return allOk, nil
+	// Assume success until a checker says otherwise.
+	return true, nil
 }
 
 func (l List) Hash() string {