tests: Work around a bug in Meson 0.58.
This is a workaround for a bug in Meson 0.58. The fix is already checked in for Meson, but this should be enough to build libglvnd until the next Meson release.
This is a workaround for a bug in Meson 0.58. The fix is already checked in for Meson, but this should be enough to build libglvnd until the next Meson release.