Comment 1 for bug 1666535

$ valgrind cmake-build-debug/bin/miral-test
...
[ PASSED ] 111 tests.
==5090==
==5090== HEAP SUMMARY:
==5090== in use at exit: 30,210 bytes in 52 blocks
==5090== total heap usage: 245,605 allocs, 245,553 frees, 103,621,077 bytes allocated
==5090==
==5090== LEAK SUMMARY:
==5090== definitely lost: 96 bytes in 6 blocks
==5090== indirectly lost: 240 bytes in 6 blocks
==5090== possibly lost: 0 bytes in 0 blocks
==5090== still reachable: 29,874 bytes in 40 blocks
==5090== suppressed: 0 bytes in 0 blocks
==5090== Rerun with --leak-check=full to see details of leaked memory
==5090==
==5090== For counts of detected and suppressed errors, rerun with: -v
==5090== ERROR SUMMARY: 55 errors from 6 contexts (suppressed: 0 from 0)