Default to 0

lib/msf/core/exploit/remote/browser_exploit_server.rb

@@ -83,7 +83,7 @@ module Msf
       register_advanced_options([
         OptString.new('CookieName', [false,  "The name of the tracking cookie", DEFAULT_COOKIE_NAME]),
         OptString.new('CookieExpiration', [false,  "Cookie expiration in years (blank=expire on exit)"]),
-        OptInt.new('JsObfuscate', [false, "Number of times to obfuscate JavaScript"])
+        OptInt.new('JsObfuscate', [false, "Number of times to obfuscate JavaScript", 0])
       ], Exploit::Remote::BrowserExploitServer)
     end