enumerate required php modules

INSTALL

@@ -9,6 +9,7 @@ local .htaccess file
 encryption support
 		- PHP *command line* access with register_argc_argv set to true in the 
 php.ini file
+		- curl, gd, and openssl extensions
 
 	- Mysql 5.x
 

mod/dfrn_confirm.php

@@ -419,8 +419,7 @@ function dfrn_confirm_post(&$a,$handsfree = null) {
 		}
 
 		$r = q("SELECT * FROM `contact` WHERE `dfrn-id` = '%s' LIMIT 1",
-			dbesc($decrypted_dfrn_id),
-			intval($local_uid)
+			dbesc($decrypted_dfrn_id)
 		);
 		if(count($r)) {
 			$message = t('The ID provided by your system is a duplicate on our system. It should work if you try again.');