Fix additional Qt version issue

src/notifications/ManagerLinux.cpp

@@ -142,7 +142,11 @@ operator<<(QDBusArgument &arg, const QImage &image)
         int channels = i.isGrayscale() ? 1 : (i.hasAlphaChannel() ? 4 : 3);
         arg << i.depth() / channels;
         arg << channels;
+#if QT_VERSION < QT_VERSION_CHECK(5, 10, 0)
+        arg << QByteArray(reinterpret_cast<const char *>(i.bits()), i.byteCount());
+#else
         arg << QByteArray(reinterpret_cast<const char *>(i.bits()), i.sizeInBytes());
+#endif
         arg.endStructure();
         return arg;
 }