ui: remove unreachable branches and function calls from write() (
issue6059)
This is at least faster than ui.write() of 4.8.2.
$ HGRCPATH=/dev/null hg files -R mozilla-central --time >/dev/null
4.8.2: time: real 2.340 secs (user 2.310+0.000 sys 0.020+0.000)
4.9rc0: time: real 2.580 secs (user 2.550+0.000 sys 0.020+0.000)
this: time: real 2.230 secs (user 2.210+0.000 sys 0.020+0.000)
Maybe the formatter should own a resolved write() function because it will
just call dest.write(msg) most of the time, but that would be too much for
stable.
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----