Correct some dict() to dict:dictionary() that were missed.

Author: Matthew Sackman

src/rabbit_invariable_queue.erl

@@ -52,7 +52,7 @@
 -type(state() :: #iv_state { queue       :: queue(),
                              qname       :: rabbit_amqqueue:name(),
                              len         :: non_neg_integer(),
-                             pending_ack :: dict()
+                             pending_ack :: dict:dictionary()
                            }).
 -include("rabbit_backing_queue_spec.hrl").
 

src/rabbit_misc.erl

@@ -167,7 +167,7 @@
 -spec(recursive_delete/1 ::
         ([file:filename()])
         -> rabbit_types:ok_or_error({file:filename(), any()})).
--spec(dict_cons/3 :: (any(), any(), dict()) -> dict()).
+-spec(dict_cons/3 :: (any(), any(), dict:dictionary()) -> dict:dictionary()).
 -spec(unlink_and_capture_exit/1 :: (pid()) -> 'ok').
 
 -endif.