Optimized memory usage when sending a message

program/include/rcube_smtp.inc

@@ -49,7 +49,7 @@ $SMTP_CONN = null;
  * @return bool  Returns TRUE on success, or FALSE on error
  * @access public
  */
-function smtp_mail($from, $recipients, $headers, $body)
+function smtp_mail($from, $recipients, $headers, &$body)
   {
   global $SMTP_CONN, $CONFIG, $SMTP_ERROR;
   $smtp_timeout = null;

program/js/app.js

@@ -1,4 +1,4 @@
-/*
+/*
  +-----------------------------------------------------------------------+
  | RoundCube Webmail Client Script                                       |
  |                                                                       |

program/lib/imap.inc

@@ -1885,7 +1885,7 @@ function iil_C_DeleteFolder(&$conn, $folder){
 	}
 }
 
-function iil_C_Append(&$conn, $folder, $message){
+function iil_C_Append(&$conn, $folder, &$message){
 	if (!$folder) return false;
 	$fp = $conn->fp;