reduce has_authority check overhead

[anonrig]

We are never setting has_authority to false. I am not sure if we should or not. Let's merge this once we are sure.

Before

BasicBench_AdaURL_url                206796 ns       206701 ns         3421 GHz=4.59137 cycle/byte=44.7268 cycles/url=1.08058k instructions/byte=110.33 instructions/cycle=2.46674 instructions/ns=11.3257 instructions/url=2.66552k ns/url=235.351 speed=99.5835M/s time/byte=10.0418ns time/url=242.607ns url/s=4.1219M/s
BasicBench_AdaURL_url_aggregator     177953 ns       177597 ns         4035 GHz=4.49142 cycle/byte=36.2755 cycles/url=876.401 instructions/byte=113.032 instructions/cycle=3.11593 instructions/ns=13.995 instructions/url=2.73081k ns/url=195.128 speed=115.903M/s time/byte=8.62789ns time/url=208.447ns url/s=4.79739M/s

After

BasicBench_AdaURL_url                200141 ns       199923 ns         3485 GHz=4.5919 cycle/byte=42.8454 cycles/url=1.03513k instructions/byte=110.222 instructions/cycle=2.57254 instructions/ns=11.8129 instructions/url=2.66291k ns/url=225.425 speed=102.96M/s time/byte=9.71253ns time/url=234.651ns url/s=4.26165M/s
BasicBench_AdaURL_url_aggregator     175378 ns       175344 ns         3969 GHz=4.59219 cycle/byte=37.1822 cycles/url=898.308 instructions/byte=112.236 instructions/cycle=3.01854 instructions/ns=13.8617 instructions/url=2.71158k ns/url=195.616 speed=117.392M/s time/byte=8.51846ns time/url=205.803ns url/s=4.85902M/s

[lemire]

@anonrig

It seems to break the tests.