Argument of CSSParserValueList has been treated as it is non-null pointer. So it should be a reference.
Created attachment 258800 [details] Patch
Created attachment 258801 [details] Patch
Comment on attachment 258801 [details] Patch r=me
@bfulgham@webkit.org - it is r+ patch, has this landed or it got changed or fixed. There is no test case in the attached patch, which I can use to test it. Appreciate if you can update it accordingly as you needed. Thanks!
This is a change for old CSS parser. I'm pretty sure the patch is no longer relevant.