From a6d51a4ea4c96a6477da3d3ec9ff39a3d0ab899a Mon Sep 17 00:00:00 2001
From: Dave Zbarsky <zbarsky@dropbox.com>
Date: Tue, 30 Jul 2019 20:32:51 +0000
Subject: [PATCH] net: avoid allocation for trace context

---
 trace/trace.go | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/trace/trace.go b/trace/trace.go
index 3ebf6f2da..d9c902022 100644
--- a/trace/trace.go
+++ b/trace/trace.go
@@ -309,9 +309,9 @@ func lookupBucket(fam string, b int) *traceBucket {
 	return f.Buckets[b]
 }
 
-type contextKeyT string
+type contextKeyT struct{}
 
-var contextKey = contextKeyT("golang.org/x/net/trace.Trace")
+var contextKey contextKeyT
 
 // Trace represents an active request.
 type Trace interface {