Fix use of wrong environment for name mangling.

code/compiler/13/compiler.cpp

@@ -54,7 +54,7 @@ void compiler::translate() {
     }
     for(auto& defn : global_defs.defs_defn) {
         auto& function = defn.second->into_global(global_scp);
-        global_env->set_mangled_name(defn.first, function.name);
+        defn.second->env->set_mangled_name(defn.first, function.name);
     }
 }