fixed repl-test-misc.rkt for the error message changes

please include on the release branch
(cherry picked from commit ef5c2b825f)

collects/tests/drracket/private/repl-test.rkt

@@ -1399,7 +1399,7 @@ This produces an ACK message
       
       (let* ([end (- (get-int-pos) 1)]
              [output (fetch-output drscheme-frame start end)]
-             [expected #rx"reference to undefined identifier.*: x"])
+             [expected #rx"x:.*cannot reference undefined identifier"])
         (unless (regexp-match expected output)
           (failure)
           (eprintf "callcc-test: expected something matching ~s, got ~s\n" expected output)))))

collects/tests/drracket/repl-test-misc.rkt

@@ -1,4 +1,3 @@
 #lang racket/base
 (require "private/repl-test.rkt" "private/drracket-test-util.rkt")
 (fire-up-drracket-and-run-tests (λ () (run-test '(misc))))
-