From 464afd4d2ddd06f6ed6c0747da83b8dbb338686a Mon Sep 17 00:00:00 2001
From: Howard Chu <hyc@symas.com>
Date: Wed, 28 Jun 2017 22:21:06 +0100
Subject: [PATCH] Ensure DNSResolver destructor runs on exit

Plugs a noisy but benign memory leak
---
 src/common/dns_utils.cpp | 8 ++------
 1 file changed, 2 insertions(+), 6 deletions(-)

diff --git a/src/common/dns_utils.cpp b/src/common/dns_utils.cpp
index ab38cbba..979f34b3 100644
--- a/src/common/dns_utils.cpp
+++ b/src/common/dns_utils.cpp
@@ -307,12 +307,8 @@ DNSResolver& DNSResolver::instance()
 {
   boost::lock_guard<boost::mutex> lock(instance_lock);
 
-  static DNSResolver* staticInstance = NULL;
-  if (staticInstance == NULL)
-  {
-    staticInstance = new DNSResolver();
-  }
-  return *staticInstance;
+  static DNSResolver staticInstance;
+  return staticInstance;
 }
 
 DNSResolver DNSResolver::create()