Don't hash the input hostname when checking a host key if the input hostname is already hashed
Don't hash the input hostname when checking a host key if the input hostname is already hashed

This happens in the loop checking if a hostkey is already loaded when
loading host key files. This reduces time to load host keys file with
about two seconds for me

torkil/paramiko,jorik041/paramiko,rcorrieri/paramiko,thusoy/paramiko,dorianpula/paramiko,fvicente/paramiko,digitalquacks/paramiko,SebastianDeiss/paramiko,varunarya10/paramiko,CptLemming/paramiko,zarr12steven/paramiko,thisch/paramiko,dlitz/paramiko,paramiko/paramiko,esc/paramiko,selboo/paramiko,mhdaimi/paramiko,Automatic/paramiko,mirrorcoder/paramiko,davidbistolas/paramiko,anadigi/paramiko,jaraco/paramiko,ameily/paramiko,remram44/paramiko,toby82/paramiko,zpzgone/paramiko,redixin/paramiko,reaperhulk/paramiko