Use statements instead of equivalents

it clogs pickling and garbage-collecting

game/scripts/interface/parcel.rpy

@@ -1,4 +1,3 @@
-
 init python:
     class Parcel(object):
         """
@@ -18,7 +17,10 @@ init python:
             self.wait = wait
             self.label = label
             self.func = func
-            self.queue = mailbox.parcels
+
+        @property
+        def queue(self):
+            return mailbox.parcels
 
         def send(self):
             self.mailed = True
@@ -70,20 +72,20 @@ init python:
 
             return (text, icon)
 
-label parcel(parcel, label):
+label parcel(parcel, lbl):
     show screen bld1
     show screen blktone
 
     $ renpy.checkpoint()
 
-    $ renpy.call("give_reward", *parcel.get_caption())
+    call give_reward(*parcel.get_caption())
 
     hide screen blktone
     hide screen bld1
     with d3
 
-    if label:
-        $ renpy.call(label)
+    if lbl:
+        call expression lbl
 
     return