Utils: Fix translation issue

Change-Id: Ib3b87e3ae24127062247330dae1ca9b031930044
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@qt.io>
Reviewed-by: Orgad Shaneh <orgads@gmail.com>

src/libs/utils/savefile.h

@@ -33,6 +33,8 @@ namespace Utils {
 
 class QTCREATOR_UTILS_EXPORT SaveFile : public QTemporaryFile
 {
+    Q_OBJECT
+
 public:
     explicit SaveFile(const QString &filename);
     virtual ~SaveFile();