From 9b51b3cb89b36edefe1d835219b3aa90ca8ffed3 Mon Sep 17 00:00:00 2001
From: Matthew McNeely <matthew.mcneely@gmail.com>
Date: Wed, 27 Mar 2019 21:25:41 -0400
Subject: [PATCH] Fix missed mutex release

---
 prom.go | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/prom.go b/prom.go
index e540f76..4688b7a 100644
--- a/prom.go
+++ b/prom.go
@@ -168,6 +168,8 @@ func (p *Prometheus) Instrument() gin.HandlerFunc {
 		if p.PathMap.values == nil {
 			p.PathMap.RUnlock()
 			p.update()
+		} else {
+			p.PathMap.RUnlock()
 		}
 		var path string
 		var found bool