`sfile->op->type->description` can be null if the user-registered operator does not have description, so check that before returning a translated string. Pull Request: https://projects.blender.org/blender/blender/pulls/136421
`sfile->op->type->description` can be null if the user-registered operator does not have description, so check that before returning a translated string. Pull Request: https://projects.blender.org/blender/blender/pulls/136421