[RFA] Remove two cleanups using std::string

[Simon Marchi]

On 2018-03-13 07:40 PM, Tom Tromey wrote:
>>>>>> "Simon" == Simon Marchi <simark@simark.ca> writes:
> 
> Simon> LGTM.  I would be more confident if that non-trivial escaping code was
> Simon> unit-tested, but I tried it by hand and it seems to do what it's supposed
> Simon> to do.
> 
> Yeah.  I looked at this briefly but it seemed like a lot of work for not
> a huge benefit.  Maybe if some other code was doing the same thing, it
> would make sense to pull this logic out into its own function.

Agreed.