take advantage of pprint-prefix in c-object-pointer prettyprinters

basis/classes/struct/prettyprint/prettyprint.factor

@@ -28,11 +28,7 @@ IN: classes.struct.prettyprint
     [ [ \ S{ ] dip [ class ] [ struct>assoc ] bi \ } (pprint-tuple) ] ?pprint-tuple ;
 
 : pprint-struct-pointer ( struct -- )
-    <block
-    \ S@ pprint-word
-    [ class pprint-word ]
-    [ >c-ptr pprint* ] bi
-    block> ;
+    \ S@ [ [ class pprint-word ] [ >c-ptr pprint* ] bi ] pprint-prefix ;
 
 PRIVATE>
 

basis/specialized-arrays/direct/functor/functor.factor

@@ -9,10 +9,7 @@ IN: specialized-arrays.direct.functor
 <PRIVATE
 
 : pprint-direct-array ( direct-array tag -- )
-    <block
-    pprint-word
-    [ underlying>> ] [ length>> ] bi [ pprint* ] bi@
-    block> ;
+    [ [ underlying>> ] [ length>> ] bi [ pprint* ] bi@ ] pprint-prefix ;
 
 PRIVATE>
 

basis/struct-arrays/prettyprint/prettyprint.factor

@@ -10,10 +10,9 @@ M: struct-array >pprint-sequence
     [ >array ] [ class>> ] bi prefix ;
 
 : pprint-struct-array-pointer ( struct-array -- )
-    <block
-    \ struct-array@ pprint-word 
-    [ class>> ] [ underlying>> ] [ length>> ] tri [ pprint* ] tri@
-    block> ;
+    \ struct-array@ 
+    [ [ class>> pprint-word ] [ underlying>> pprint* ] [ length>> pprint* ] tri ]
+    pprint-prefix ;
 
 M: struct-array pprint*
     [ pprint-object ]