rib: fix logic bug in config file validation

Closes: https://github.com/named-data/NFD/pull/9
Change-Id: I3b7c53c475098ec83fd469ceb40a306dfcd80cf3
diff --git a/daemon/rib/service.cpp b/daemon/rib/service.cpp
index f7b4719..d9e5bc5 100644
--- a/daemon/rib/service.cpp
+++ b/daemon/rib/service.cpp
@@ -1,6 +1,6 @@
 /* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
 /*
- * Copyright (c) 2014-2019,  Regents of the University of California,
+ * Copyright (c) 2014-2020,  Regents of the University of California,
  *                           Arizona Board of Regents,
  *                           Colorado State University,
  *                           University Pierre & Marie Curie, Sorbonne University,
@@ -167,8 +167,12 @@
   for (const auto& item : section) {
     const std::string& key = item.first;
     const ConfigSection& value = item.second;
-    if (key == CFG_LOCALHOST_SECURITY || key == CFG_LOCALHOP_SECURITY || key == CFG_PA_VALIDATION) {
-      hasLocalhop = key == CFG_LOCALHOP_SECURITY;
+    if (key == CFG_LOCALHOST_SECURITY || key == CFG_PA_VALIDATION) {
+      ndn::ValidatorConfig testValidator(m_face);
+      testValidator.load(value, filename);
+    }
+    else if (key == CFG_LOCALHOP_SECURITY) {
+      hasLocalhop = true;
       ndn::ValidatorConfig testValidator(m_face);
       testValidator.load(value, filename);
     }