[2.1.4] [MFH] Fix bug with rgb(0, 1, 2) color syntax with spaces inside shorthand syntax from r1612

- Also, repair botched comment patch

git-svn-id: http://htmlpurifier.org/svnroot/htmlpurifier/branches/php4@1716 48356398-32a2-884e-a903-53898d9a118a

library/HTMLPurifier/AttrDef/CSS/Background.php

@@ -31,6 +31,9 @@ class HTMLPurifier_AttrDef_CSS_Background extends HTMLPurifier_AttrDef
         $string = $this->parseCDATA($string);
         if ($string === '') return false;
         
+        // munge rgb() decl if necessary
+        $string = $this->mungeRgb($string);
+        
         // assumes URI doesn't have spaces in it
         $bits = explode(' ', strtolower($string)); // bits to process