[clang] remove code duplication

[Richard Smith]

LGTM, thanks!

On Fri, Jan 23, 2015 at 12:01 PM, Nathan Sidwell <nathan at acm.org> wrote:
> Richard,
> in looking at 18432, I came across some duplicated code in
> Parser::HandleMemberFunctionDeclDelays.  This patch[*] rearranges things to
> avoid such a duplication.  Basically do an early check of the parameters to
> see if there are any default args.
>
> tested on x86_64-linux-gnu, ok?
>
> nathan
>
> [*] no tabs, now I've configured xemacs