When writing an AST matcher to find inherited Objective-C classes, I
noticed the returned ObjCInterfaceDecl* was mutable. It doesn't seem
like it needs to be mutable, so this patch makes it const.
Patch by Adam Ernst.
@beng (hello!!) I've spotted you reviewing some Objective-C clang stuff … can you review, or do you have advice on a qualified reviewer?
Thanks! @jyknight might want to take a look (this seems fine to me though).
I don't really have much to say about this, and the patch is probably fine, but I do note that most of the other accessors on this class also return mutable objects.