From 62e576e79d0b2516065413d4d969f6a57ef7788b Mon Sep 17 00:00:00 2001
From: Daniel Stenberg <daniel@haxx.se>
Date: Mon, 2 Jul 2018 13:04:11 +0200
Subject: [PATCH] bug 1472656 - only do DNS_TRR_COMPARE in shadow or parallel
 mode r=mcmanus

MozReview-Commit-ID: 5eQb3pCNIwK

--HG--
extra : rebase_source : 95b197684c74d48ef37cade44d548536e4371409
---
 netwerk/dns/nsHostResolver.cpp | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/netwerk/dns/nsHostResolver.cpp b/netwerk/dns/nsHostResolver.cpp
index 674e5cea825f..9c98ed7abd60 100644
--- a/netwerk/dns/nsHostResolver.cpp
+++ b/netwerk/dns/nsHostResolver.cpp
@@ -296,7 +296,8 @@ nsHostRecord::ResolveComplete()
         }
     }
 
-    if (mTRRUsed && mNativeUsed) {
+    if (mTRRUsed && mNativeUsed &&
+        ((mResolverMode == MODE_SHADOW) || (mResolverMode == MODE_PARALLEL))) {
         // both were used, accumulate comparative success
         AccumulateCategorical(mNativeSuccess && mTRRSuccess?
                               Telemetry::LABELS_DNS_TRR_COMPARE::BothWorked :