Fix a dangling reference to the list of database files

CCBUG: 427650

src/service/plugins/sqlite/Database.cpp

@@ -26,6 +26,7 @@
 // System
 #include <cmath>
 #include <memory>
+#include <array>
 
 // Local
 #include "DebugResources.h"
@@ -91,7 +92,7 @@ void ResourcesDatabaseInitializer::initDatabase(bool retryOnFail)
         = QStandardPaths::writableLocation(QStandardPaths::GenericDataLocation)
           + QStringLiteral("/kactivitymanagerd/resources/working-backup/");
 
-    const QStringList databaseFiles{"database", "database-wal", "database-shm"};
+    static const std::array<QString, 3> databaseFiles{"database", "database-wal", "database-shm"};
 
     {
         QDir dir;