removed redundant check

svn: r6198

collects/net/sendurl.ss

@@ -1,3 +1,6 @@
+;; The main client of this module is browser/external.ss
+;;   (others just use the (send-url url [new?]) interface.)
+
 (module sendurl mzscheme
   (require (lib "process.ss")
            (lib "file.ss")

collects/net/url-unit.ss

@@ -44,7 +44,6 @@
                                (equal? (car v) "http")
                                (string? (car v))
                                (number? (caddr v))
-                               (exact? (caddr v))
                                (integer? (caddr v))
                                (<= 1 (caddr v) 65535)))
                         v))