message: Do not import empty dependencies
diff: @@ -120,7 +120,9 @@ IndexFile* ConsumeFile(IndexParam* param, CXFile file) {
  // generating an index for it):
  if (param->seen_cx_files.insert(file).second) {
  std::string file_name = FileName(file);
  -
  + // Sometimes the fill name will be empty. Not sure why. Not much we can do
  + // with it.
  + if (!file_name.empty()) {
  // Add to all files we have seen so we can generate proper dependency
  // graph.
  param->seen_files.push_back(file_name);
  @@ -138,6 +140,7 @@ IndexFile* ConsumeFile(IndexParam* param, CXFile file) {
  LOG_S(ERROR) << "[indexer] Failed to read file content for " << file_name;
  }
  }
  + }
  if (is_first_ownership) {
  // Report skipped source range list.
  