message: Workaround for quirk of Apple clang
diff: @@ -165,7 +165,14 @@ impl<'tu> GeneratorEnv<'tu> {
  }
  (l, line_offset as u32)
  } else {
  - (entity.get_range().expect("Can't get entity range").get_start().get_spelling_location(), 0)
  + let loc = if let Some(range) = entity.get_range() {
  + range.get_start().get_spelling_location()
  + } else {
  + // for some reason Apple libclang on macos has problems with get_range() on FacemarkLBF::Params::pupils
  + // see https://github.com/twistedfall/opencv-rust/issues/159#issuecomment-668234058
  + entity.get_location().expect("Can't get entity location").get_spelling_location()
  + };
  + (loc, 0)
  };
  (loc.file.expect("Can't get exported entry file").get_path(), loc.line, offset)
  }
  