how to use a vector

fontland/fontland/subset.rkt

@@ -100,7 +100,7 @@ https://github.com/mbutterick/fontkit/blob/master/src/subset/CFFSubset.js
                                 gsubrs)))
 
 (define (subsetSubrs this subrs used)
-  (for/list ([(subr i) (in-indexed subrs)])
+  (for/vector ([(subr i) (in-indexed subrs)])
     (cond
       [(hash-ref used i #false)
        (pos (hash-ref (cff-subset-cff this) 'stream) (hash-ref subr 'offset))

fontland/fontland/table/cff/cff-private-dict.rkt

@@ -44,5 +44,4 @@ https://github.com/mbutterick/fontkit/blob/master/src/cff/CFFPrivateDict.js
      (21        nominalWidthX        number                                      0)
      (22        vsindex              number                                      0)
      (23        blend               ,CFFBlendOp                                  #false)
-     (19        Subrs               ,(CFFPointer (CFFIndex) #:relative-to 'local)         ,null))))
-;; todo: why can't the subrs default value be `(vector)`?
+     (19        Subrs               ,(CFFPointer (CFFIndex) #:relative-to 'local)         ,(vector)))))