Revert some unrelated changes from PR 67
diff --git a/demo-cxx/demo.h b/demo-cxx/demo.h
index 29a3ba1..2c9f1c0 100644
--- a/demo-cxx/demo.h
+++ b/demo-cxx/demo.h
@@ -17,7 +17,7 @@
 struct SharedThing;
 struct JsonBlob;
 
-std::unique_ptr<ThingC> make_demo(::rust::Str appname);
+std::unique_ptr<ThingC> make_demo(rust::Str appname);
 const std::string &get_name(const ThingC &thing);
 std::unique_ptr<std::vector<uint8_t>> do_thing(SharedThing state);
 JsonBlob get_jb(const ::rust::Vec<uint8_t> &vec);