change malloc-object and <c-object> not to be in terms of malloc-array and <c-array>

basis/alien/c-types/c-types.factor

@@ -257,13 +257,16 @@ M: f byte-length drop 0 ; inline
     heap-size * <byte-array> ; inline deprecated
 
 : <c-object> ( type -- array )
-    1 swap <c-array> ; inline
+    heap-size <byte-array> ; inline
+
+: (c-object) ( type -- array )
+    heap-size (byte-array) ; inline
 
 : malloc-array ( n type -- alien )
     [ heap-size calloc ] [ <c-type-direct-array> ] 2bi ; inline
 
 : malloc-object ( type -- alien )
-    1 swap malloc-array ; inline
+   heap-size malloc ; inline
 
 : malloc-byte-array ( byte-array -- alien )
     dup byte-length [ nip malloc dup ] 2keep memcpy ;