QML: Drop backup source code once we're done with it

If a component is done loading, we don't need the source code anymore.
Dropping it makes it possible to unmap any resources it may be part of.

Fixes: QTBUG-86088
Change-Id: Id523fffb788b5ffa60cb1e7b777328c6648c2a88
Reviewed-by: Sami Shalayel <sami.shalayel@qt.io>
Reviewed-by: Andrei Golubev <andrei.golubev@qt.io>
Reviewed-by: hjk <hjk@qt.io>
Reviewed-by: Fabian Kosmale <fabian.kosmale@qt.io>
(cherry picked from commit f3d9e9214be92bc79c1d5e58f07f730a6ff31528)
Reviewed-by: Qt Cherry-pick Bot <cherrypick_bot@qt-project.org>

1 files changed, 1 insertions, 0 deletions

diff --git a/tests/auto/qml/qqmllanguage/tst_qqmllanguage.cpp b/tests/auto/qml/qqmllanguage/tst_qqmllanguage.cpp
index 548004b24e..b9b7d3e6a9 100644
--- a/tests/auto/qml/qqmllanguage/tst_qqmllanguage.cpp
+++ b/tests/auto/qml/qqmllanguage/tst_qqmllanguage.cpp
@@ -2524,6 +2524,7 @@ void tst_qqmllanguage::scriptStringWithoutSourceCode()
         QQmlEnginePrivate *eng = QQmlEnginePrivate::get(&engine);
         QQmlRefPointer<QQmlTypeData> td = eng->typeLoader.getType(url);
         Q_ASSERT(td);
+        QVERIFY(!td->backupSourceCode().isValid());
 
         QQmlRefPointer<QV4::ExecutableCompilationUnit> compilationUnit = td->compilationUnit();
         readOnlyQmlUnit.reset(compilationUnit->unitData());