Land rapid7#2111, variable assignment fix

Author: wvu

modules/exploits/multi/http/phpldapadmin_query_engine.rb

@@ -114,7 +114,7 @@ def exploit
 		data = "cmd=query_engine&query=none&search=1&orderby=#{php_code}\r\n\r\n"
 		session = get_session
 
-		uri normalize_uri(datastore['URI'])
+		uri = normalize_uri(datastore['URI'])
 		uri << '/' if uri[-1,1] != '/'
 		uri << 'cmd.php'