properly encode path

apps/files/js/files.js

@@ -960,7 +960,7 @@ function getMimeIcon(mime, ready){
 getMimeIcon.cache={};
 
 function getPreviewIcon(path, ready){
-	ready(OC.Router.generate('core_ajax_preview', {file:path, x:44, y:44}));
+	ready(OC.Router.generate('core_ajax_preview', {file: encodeURIComponent(path), x:44, y:44}));
 }
 
 function getUniqueName(name){

apps/files_trashbin/lib/trash.php

@@ -852,6 +852,6 @@ class Trashbin {
 	}
 
 	public static function preview_icon($path) {
-		return \OC_Helper::linkToRoute( 'core_ajax_trashbin_preview', array('x' => 44, 'y' => 44, 'file' => $path));
+		return \OC_Helper::linkToRoute( 'core_ajax_trashbin_preview', array('x' => 44, 'y' => 44, 'file' => urlencode($path) ));
 	}
 }

lib/helper.php

@@ -231,7 +231,7 @@ class OC_Helper {
 	 * Returns the path to the preview of the file.
 	 */
 	public static function previewIcon($path) {
-		return self::linkToRoute( 'core_ajax_preview', array('x' => 44, 'y' => 44, 'file' => $path));
+		return self::linkToRoute( 'core_ajax_preview', array('x' => 44, 'y' => 44, 'file' => urlencode($path) ));
 	}
 
 	/**