message: Fix calculation of indices from auxData
diff: @@ -1382,17 +1382,16 @@ export namespace IModelJson {
  private handlePolyfaceAuxData(auxData: PolyfaceAuxData, pf: IndexedPolyface): any {
  const contents: { [k: string]: any } = {};
  - const indices = [];
  + contents.indices = [];
  const visitor = pf.createVisitor(0);
  if (!visitor.auxData) return;
  while (visitor.moveToNextFacet()) {
  for (let i = 0; i < visitor.indexCount; i++) {
  - indices.push(visitor.auxData.indices[i] + 1);
  + contents.indices.push(visitor.auxData.indices[i] + 1);
  }
  - indices.push(0); // facet terminator.
  + contents.indices.push(0); // facet terminator.
  }
  - contents.indices = auxData.indices.slice(0);
  contents.channels = [];
  for (const inChannel of auxData.channels) {
  const outChannel: { [k: string]: any } = {};
  