tests: silence unused variable warning


Pick-to: 6.12
Change-Id: I31ce18bfd832e4e9b790be36b6f2297d24795768
Reviewed-by: Artem Dyomin <artem.dyomin@qt.io>
commit6d5a3602efcb8d96c6966aad9317894a43c0b04d
parentf2ffa6b9f807b500ad137643c2bbf5f372afbb34
authorTim Blechmann <tim.blechmann@qt.io>
committerTim Blechmann <tim.blechmann@qt.io>
commit timeThu, 15 Oct 2026 12:37:18 +0000