630c3ce94e
The GCC version on the buildbot does not support attribute on a class member, resulting in the following warning: NOD_node_declaration.hh:577:42: warning: ‘maybe_unused’ attribute ignored [-Wattributes] Use the `UNUSED_VARS` macro instead to solve the original warning about member being unused in release builds without introducing a warning when using older compiler. Pull Request: https://projects.blender.org/blender/blender/pulls/131974