Fix redirect url

Author: wchen-r7

modules/exploits/multi/browser/firefox_proto_crmfrequest.rb

@@ -82,7 +82,8 @@ def generate_html(target_info,refer)
     if refer.nil? or refer.blank?
       redirect = "#{get_module_uri}/addon.xpi"
     else
-      redirect = "http://#{refer}/#{@exploit_receiver_page}/addon.xpi"
+      proto = ((datastore['SSL']) ? 'https' : 'http')
+      redirect = "#{proto}://#{refer}#{get_module_resource}addon.xpi"
     end
 
     script = js_obfuscate %Q|