Target transfer allocation faults after the file dialog closes

tools/chatgui/tests/test_member_files_lifecycle.cpp

@@ -5,12 +5,15 @@
 #include "../db/db_manager.h"
 #include <QtTest>
 #include <QLabel>
+#include <QDir>
+#include <QPointer>
 #include <QPushButton>
 #include <QTreeWidget>
 #include <QFileDialog>
 #include <QFile>
 #include <QTemporaryDir>
 #include <QScopeGuard>
+#include <cstring>
 extern "C" {
 #include "utun_instance.h"
 #include "chat/chat_core.h"
@@ -310,10 +313,11 @@ private slots:
                 auto* dialog = qobject_cast<QFileDialog*>(QApplication::activeModalWidget());
                 if (!dialog) return;
                 dialog->selectFile(destination); accepted = QMetaObject::invokeMethod(dialog, "accept");
-            });
 #ifdef UTUN_TEST_FILE_ALLOC_FAILURES
-            failAllocation = failure;
+                // Включить отказ после выбора пути, чтобы QUOTA-таймер внутри диалога не перехватил инъекцию.
+                failAllocation = failure;
 #endif
+            });
             download->click(); QVERIFY(accepted);
             if (!failure) {
                 QVERIFY(cancel->isEnabled()); QVERIFY(!tree->isEnabled());