Fix bug where "With attachment" option in search filter wasn't selected after return from mail view (#1489774)

Conflicts:

	CHANGELOG

CHANGELOG

@@ -1,6 +1,8 @@
 CHANGELOG Roundcube Webmail
 ===========================
 
+- Fix bug where "With attachment" option in search filter wasn't selected after return from mail view (#1489774)
+
 RELEASE 1.0.0
 -------------
 - Fix style of disabled protocol handler link on IE (#1489569)

program/steps/mail/func.inc

@@ -1984,7 +1984,7 @@ function rcmail_search_filter($attrib)
     $ctypes = array('application/', 'multipart/m', 'multipart/signed', 'multipart/report');
 
     // Build search string of "with attachment" filter
-    $attachment = str_repeat(' OR', count($ctypes)-1);
+    $attachment = trim(str_repeat(' OR', count($ctypes)-1));
     foreach ($ctypes as $type) {
         $attachment .= ' HEADER Content-Type ' . rcube_imap_generic::escape($type);
     }