[tidy] Check modernize-pass-by-value

Ref: http://clang.llvm.org/extra/clang-tidy/checks/modernize-pass-by-value.html

2 files changed, 4 insertions, 4 deletions

diff --git a/include/mbgl/style/function.hpp b/include/mbgl/style/function.hpp
index da2659c76a..44ffa31079 100644
--- a/include/mbgl/style/function.hpp
+++ b/include/mbgl/style/function.hpp
@@ -12,8 +12,8 @@ public:
     using Stop = std::pair<float, T>;
     using Stops = std::vector<Stop>;
 
-    explicit Function(const Stops& stops_, float base_)
-        : base(base_), stops(stops_) {}
+    explicit Function(Stops stops_, float base_)
+        : base(base_), stops(std::move(stops_)) {}
 
     float getBase() const { return base; }
     const std::vector<std::pair<float, T>>& getStops() const { return stops; }
diff --git a/include/mbgl/style/transition_options.hpp b/include/mbgl/style/transition_options.hpp
index 87faff21f8..5803fe05c9 100644
--- a/include/mbgl/style/transition_options.hpp
+++ b/include/mbgl/style/transition_options.hpp
@@ -8,8 +8,8 @@ namespace style {
 
 class TransitionOptions {
 public:
-    TransitionOptions(const optional<Duration>& duration_ = {}, const optional<Duration>& delay_ = {})
-        : duration(duration_), delay(delay_) {}
+    TransitionOptions(optional<Duration> duration_ = {}, optional<Duration> delay_ = {})
+        : duration(std::move(duration_)), delay(std::move(delay_)) {}
 
     optional<Duration> duration;
     optional<Duration> delay;