fix minor issue with safe chars

git-svn-id: https://plugins.svn.wordpress.org/cyclone-slider-2/trunk@751454 b8457f37-d9ea-0310-8a92-e5e31aec5664
stable tag to 2.6.1

git-svn-id: https://plugins.svn.wordpress.org/cyclone-slider-2/trunk@751456 b8457f37-d9ea-0310-8a92-e5e31aec5664