* src/output.c (output_master_parser): Don't finish action_obstack.

(output_parser): Don't care about the muscle action, here.
(prepare): Copy the action_obstack in the action muscle.
(output): Free action_obstack.

src/bison.simple

@@ -761,7 +761,7 @@ yyreduce:
 #endif
   switch (yyn)
     {
-      %%action /* The action file replaces this line.  */
+      %%action
     }
 #line %%line "%%skeleton"