message: Null check the R classes from config in TrackResourcesPass
  Summary: Make this a little more resilient for the case where a config is used across many apps, of which different types of resources may not exist.
diff: @@ -139,8 +139,13 @@ std::unordered_set<DexClass*> TrackResourcesPass::build_tracked_cls_set(
  const std::vector<std::string>& cls_suffixes, const ProguardMap& pg_map) {
  std::unordered_set<DexClass*> tracked_classes;
  for (auto& s : cls_suffixes) {
  - tracked_classes.emplace(
  - type_class(DexType::get_type(pg_map.translate_class(s).c_str())));
  + auto dtype = DexType::get_type(pg_map.translate_class(s).c_str());
  + if (dtype != nullptr) {
  + auto cls = type_class(dtype);
  + if (cls != nullptr) {
  + tracked_classes.emplace(cls);
  + }
  + }
  }
  return tracked_classes;
  }
  