Fix build for upcoming mono 5.0
See mono 5.0 build results here: https://build.opensuse.org/package/show/home:Warhammer40k:Mono:5.0_test/mono-addins
@Mailaender, @MargueriteSu, @Warhammer40k, @decriptor, @k0da, @posophe: review reminder
Warhammer40k created request about 7 years ago
Warhammer40k accepted request about 7 years ago
The Open Build Service is an openSUSE project.
See mono 5.0 build results here: https://build.opensuse.org/package/show/home:Warhammer40k:Mono:5.0_test/mono-addins
@Mailaender, @MargueriteSu, @Warhammer40k, @decriptor, @k0da, @posophe: review reminder