event/Loop: use std::scoped_lock with implicit template parameter

src/event/Loop.cxx

@@ -326,7 +326,7 @@ EventLoop::Run() noexcept
 		/* try to handle DeferEvents without WakeFD
 		   overhead */
 		{
-			const std::scoped_lock<Mutex> lock(mutex);
+			const std::scoped_lock lock{mutex};
 			HandleInject();
 #endif
 
@@ -349,7 +349,7 @@ EventLoop::Run() noexcept
 
 #ifdef HAVE_THREADED_EVENT_LOOP
 		{
-			const std::scoped_lock<Mutex> lock(mutex);
+			const std::scoped_lock lock{mutex};
 			busy = true;
 		}
 #endif
@@ -381,7 +381,7 @@ EventLoop::AddInject(InjectEvent &d) noexcept
 	bool must_wake;
 
 	{
-		const std::scoped_lock<Mutex> lock(mutex);
+		const std::scoped_lock lock{mutex};
 		if (d.IsPending())
 			return;
 
@@ -400,7 +400,7 @@ EventLoop::AddInject(InjectEvent &d) noexcept
 void
 EventLoop::RemoveInject(InjectEvent &d) noexcept
 {
-	const std::scoped_lock<Mutex> protect(mutex);
+	const std::scoped_lock protect{mutex};
 
 	if (d.IsPending())
 		inject.erase(inject.iterator_to(d));
@@ -432,7 +432,7 @@ EventLoop::OnSocketReady([[maybe_unused]] unsigned flags) noexcept
 		return;
 	}
 
-	const std::scoped_lock<Mutex> lock(mutex);
+	const std::scoped_lock lock{mutex};
 	HandleInject();
 }