Avoid memory leak in String.cString() #22
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The function String.cString(using: Encoding) appears to be the cause of a memory leak with the changes in issue_788.
It would appear that the storage allocated by this function is never freed. It looks like there is some code there which deliberately extends the lifetime of the storage there (but I don't understand the code or the motivation).
I tried replacing this with some code replicating what we do in RouterResponse. This doesn't leak and performs similar.