Andrew Nacin 1d7714d923 Check for is_rtl() existence before checking it in the fallback condition in wp_admin_css(). Prevents fatal errors when plugins call wp_admin_css() on a non-existent (probably removed) stylesheet. props SergeyBiryukov, fixes #19913. ...

git-svn-id: https://develop.svn.wordpress.org/trunk@20326 602fd350-edb4-49c9-b593-d223f7449a82

2012-03-30 13:10:52 +00:00

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