Replace std::unique_ptr with a custom implementation

<memory> is a costly header we can avoid by just implementing
UniquePtr ourselves, which is a pretty straightforward in modern
C++, this saves around 10% of the compilation time here.

1 files changed, 1 insertions, 1 deletions

diff --git a/src/highlighter.cc b/src/highlighter.cc
index 7a6b2155..3e253343 100644
--- a/src/highlighter.cc
+++ b/src/highlighter.cc
@@ -35,7 +35,7 @@ Highlighter& Highlighter::get_child(StringView path)
     throw runtime_error("this highlighter does not hold children");
 }
 
-void Highlighter::add_child(String, std::unique_ptr<Highlighter>&&, bool)
+void Highlighter::add_child(String, UniquePtr<Highlighter>&&, bool)
 {
     throw runtime_error("this highlighter does not hold children");
 }