Small performance improvements suggested by clang-tidy

mostly add const &, a few std::move and in particular case, remove const
so the std::move being done over the variable actually has effect

Change-Id: Id611cd31bc012f219d7a17d4626b1c2a5fbddd66
Reviewed-by: Fabian Kosmale <fabian.kosmale@qt.io>
Reviewed-by: Ulf Hermann <ulf.hermann@qt.io>

1 files changed, 1 insertions, 1 deletions

diff --git a/src/qml/qml/qqmlmetatypedata.cpp b/src/qml/qml/qqmlmetatypedata.cpp
index 41a7778da3..775bc8bdb4 100644
--- a/src/qml/qml/qqmlmetatypedata.cpp
+++ b/src/qml/qml/qqmlmetatypedata.cpp
@@ -150,7 +150,7 @@ QQmlPropertyCache *QQmlMetaTypeData::propertyCache(const QQmlType &type, int min
     bool hasCopied = false;
 
     for (int ii = 0; ii < types.count(); ++ii) {
-        QQmlType currentType = types.at(ii);
+        const QQmlType &currentType = types.at(ii);
         if (!currentType.isValid())
             continue;