[web-devel] Confusing double use of chooseRep in runHandler

[Tyson Whitehead]

I believe there may be an unneeded pass through chooseRep in at the end of 
runHandler in the HCContent branch of the content case construct

  HCContent status a -> do
    (ct, c) <- liftIO $ chooseRep a cts
    return $ YARPlain status (headers []) ct c finalSession

The chooseRep instance will just be id as a is already of type ChooseRep.

While I doubt there would be any performance benefit, as I would hope it is 
optimized out, it did cause me some confusion while reading to code, so think 
it would be worth removing for clarity.  I've attached a patch for this.

Cheers!  -Tyson
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