Merge pull request #57 from joshgillies/bug

Fix issue occuring when '_autoprefixerDisabled' is undefined

Author: ai

lib/processor.coffee

@@ -122,9 +122,13 @@ class Processor
       else
         false
 
-    else
+    else if node.parent
       node._autoprefixerDisabled = @disabled(node.parent)
 
+    else
+      # unknown state
+      false
+
   # Normalize spaces in cascade declaration group
   reduceSpaces: (decl) ->
     stop = false