From 32fce1e668c6b16a8429b4d72a6533c895d84f72 Mon Sep 17 00:00:00 2001
From: David Redondo <kde@david-redondo.de>
Date: Tue, 28 Jul 2020 08:58:41 +0200
Subject: [PATCH] Do not unnecessary specify a default capture for singleton
 registration lambdas

A lambda can only be converted to a function pointer if it does not capture
anything. Just specifying a default capture even if it does not capture anything,
prevents this. In newer Qt this actually ended up calling the std::function
(which is much heavier than function pointers) overload which was introduced
only after Qt 5.12.
---
 src/declarativeimports/core/corebindingsplugin.cpp | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/declarativeimports/core/corebindingsplugin.cpp b/src/declarativeimports/core/corebindingsplugin.cpp
index 60da1c60b..c03b08ebb 100644
--- a/src/declarativeimports/core/corebindingsplugin.cpp
+++ b/src/declarativeimports/core/corebindingsplugin.cpp
@@ -74,7 +74,7 @@ void CoreBindingsPlugin::registerTypes(const char *uri)
     Q_ASSERT(uri == QByteArray("org.kde.plasma.core"));
 
     qmlRegisterUncreatableType<Plasma::Types>(uri, 2, 0, "Types", {});
-    qmlRegisterSingletonType<Units>(uri, 2, 0, "Units", [=](QQmlEngine*, QJSEngine*) -> QObject* { return &Units::instance(); });
+    qmlRegisterSingletonType<Units>(uri, 2, 0, "Units", [](QQmlEngine*, QJSEngine*) -> QObject* { return &Units::instance(); });
 
     qmlRegisterType<Plasma::Svg>(uri, 2, 0, "Svg");
     qmlRegisterType<Plasma::FrameSvg>(uri, 2, 0, "FrameSvg");
@@ -82,7 +82,7 @@ void CoreBindingsPlugin::registerTypes(const char *uri)
     qmlRegisterType<Plasma::FrameSvgItem>(uri, 2, 0, "FrameSvgItem");
 
     //qmlRegisterType<ThemeProxy>(uri, 2, 0, "Theme");
-    qmlRegisterSingletonType<Plasma::QuickTheme>(uri, 2, 0, "Theme", [=](QQmlEngine* engine, QJSEngine*) -> QObject* { return new Plasma::QuickTheme(engine); });
+    qmlRegisterSingletonType<Plasma::QuickTheme>(uri, 2, 0, "Theme", [](QQmlEngine* engine, QJSEngine*) -> QObject* { return new Plasma::QuickTheme(engine); });
     qmlRegisterType<ColorScope>(uri, 2, 0, "ColorScope");
 
     qmlRegisterType<Plasma::DataSource>(uri, 2, 0, "DataSource");