From d15b9c1f9c1afa29175ba2e398adc680e66147e6 Mon Sep 17 00:00:00 2001
From: "Thiago Marcos P. Santos" <tmpsantos@gmail.com>
Date: Fri, 20 Mar 2020 12:38:09 +0200
Subject: [core] Fix performance-unnecessary-value-param errors

As reported by clang-tidy-8.
---
 include/mbgl/style/image.hpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'include/mbgl/style/image.hpp')

diff --git a/include/mbgl/style/image.hpp b/include/mbgl/style/image.hpp
index dd62d9e0ae..deb4b6f6ce 100644
--- a/include/mbgl/style/image.hpp
+++ b/include/mbgl/style/image.hpp
@@ -34,7 +34,7 @@ public:
           bool sdf,
           ImageStretches stretchX = {},
           ImageStretches stretchY = {},
-          optional<ImageContent> content = nullopt);
+          const optional<ImageContent>& content = nullopt);
     Image(std::string id,
           PremultipliedImage&& image,
           float pixelRatio,
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