1fdd7cd098
In case a scene strips `Input` was set to `Sequencer`, but the scene did not actually have `Editing` data (e.g. when just adding a `New` scene as scene strip), blender would crash trying to render. Now simply check if the required `Editing` data is present before proceeding. Pull Request: https://projects.blender.org/blender/blender/pulls/120418