mail/roundcube: chase PHP Warning: array_merge(): Argument #1 is not an array

Obtained from:  https://github.com/roundcube/Net_Sieve/commit/47419a26b6

mail/roundcube/Makefile

@@ -2,6 +2,7 @@
 
 PORTNAME=	roundcube
 DISTVERSION=	1.1.4
+PORTREVISION=	1
 PORTEPOCH=	1
 CATEGORIES?=	mail www
 MASTER_SITES=	SF/${PORTNAME}mail/${PORTNAME}mail/${DISTVERSION:tu}

mail/roundcube/files/patch-vendor_pear-pear.php.net_Net__Sieve_Net_Sieve.php

@@ -0,0 +1,11 @@
+--- vendor/pear-pear.php.net/Net_Sieve/Net/Sieve.php.orig	2016-03-01 14:32:07 UTC
++++ vendor/pear-pear.php.net/Net_Sieve/Net/Sieve.php
+@@ -229,7 +229,7 @@ class Net_Sieve
+         $this->_sock              = new Net_Socket();
+         $this->_bypassAuth        = $bypassAuth;
+         $this->_useTLS            = $useTLS;
+-        $this->_options           = $options;
++        $this->_options           = (array)$options;
+         $this->setDebug($debug, $handler);
+ 
+         /* Try to include the Auth_SASL package.  If the package is not