escape tmppath shell arg

lib/preview/movies.php

@@ -24,7 +24,7 @@ if(!is_null(shell_exec('ffmpeg -version'))) {
 			$tmppath = \OC_Helper::tmpFile();
 
 			//$cmd = 'ffmpeg -y  -i ' . escapeshellarg($abspath) . ' -f mjpeg -vframes 1 -ss 1 -s ' . escapeshellarg($maxX) . 'x' . escapeshellarg($maxY) . ' ' . $tmppath;
-			$cmd = 'ffmpeg -y  -i ' . escapeshellarg($abspath) . ' -f mjpeg -vframes 1 -ss 1 ' . $tmppath;
+			$cmd = 'ffmpeg -y  -i ' . escapeshellarg($abspath) . ' -f mjpeg -vframes 1 -ss 1 ' . escapeshellarg($tmppath);
 			shell_exec($cmd);
 
 			unlink($abspath);