zo-syntax CS test failures

[bennn]

some zo-syntax tests fail on a recent CS (post 7.6)

raco test: (submod "/Users/ben/code/racket/my-pkgs/zordoz/private/zo-syntax.rkt" test)
raco test: @(test-responsible '(ben))
--------------------
-- compiled-expression->zo
ERROR

linkl-body: contract violation
  expected: linkl?
  given: #<linklet>
  in: the 1st argument of
      (-> linkl? (listof (or/c form? any/c)))
  contract from: 
      <pkgs>/zo-lib/compiler/zo-structs.rkt
  blaming: (/Users/ben/code/racket/my-pkgs/zordoz/private/zo-syntax.rkt test)
   (assuming the contract is correct)
  at: <pkgs>/zo-lib/compiler/zo-structs.rkt:61.21
--------------------
--------------------
-- syntax->zo
ERROR

linkl-body: contract violation
  expected: linkl?
  given: #<linklet>
  in: the 1st argument of
      (-> linkl? (listof (or/c form? any/c)))
  contract from: 
      <pkgs>/zo-lib/compiler/zo-structs.rkt
  blaming: (/Users/ben/code/racket/my-pkgs/zordoz/private/zo-syntax.rkt test)
   (assuming the contract is correct)
  at: <pkgs>/zo-lib/compiler/zo-structs.rkt:61.21
--------------------
--------------------
syntax->zo 2
ERROR

linkl-body: contract violation
  expected: linkl?
  given: #<linklet>
  in: the 1st argument of
      (-> linkl? (listof (or/c form? any/c)))
  contract from: 
      <pkgs>/zo-lib/compiler/zo-structs.rkt
  blaming: (/Users/ben/code/racket/my-pkgs/zordoz/private/zo-syntax.rkt test)
   (assuming the contract is correct)
  at: <pkgs>/zo-lib/compiler/zo-structs.rkt:61.21
--------------------

wait for Racket issue 3073 to decide what to do