message: Remove shadowed variable in launcher.
diff: @@ -458,8 +458,8 @@ launcher_def::initialize (const variables_map &vmap) {
  if (prod_nodes > total_nodes)
  total_nodes = prod_nodes;
  - char * erd = getenv ("EOS_ROOT_DIR");
  - if (erd == 0) {
  + erd = getenv ("EOS_ROOT_DIR");
  + if (erd.empty()) {
  erd = getenv ("PWD");
  }
  stage = bf::path(erd);
  