[Linux] Do not loop over the select
[Linux] Do not loop over the select

Because timeout is not recalculated, it could cause oversleep.

Do a quick check after select, same as Win32

draegtun/ren-c,kealist/ren-c,codebybrett/ren-c,rgchris/ren-c,giuliolunati/ren-c,codebybrett/ren-c,codebybrett/ren-c,draegtun/ren-c,giuliolunati/ren-c,draegtun/ren-c,hostilefork/rebol,codebybrett/ren-c,hostilefork/rebol,rgchris/ren-c,kealist/ren-c,mbk/ren-c,kealist/ren-c,kealist/ren-c,draegtun/ren-c,codebybrett/ren-c,hostilefork/rebol,mbk/ren-c,giuliolunati/ren-c,hostilefork/rebol,draegtun/ren-c,rgchris/ren-c,mbk/ren-c,giuliolunati/ren-c,kealist/ren-c,kealist/ren-c,hostilefork/rebol,codebybrett/ren-c,hostilefork/rebol,draegtun/ren-c,rgchris/ren-c,rgchris/ren-c,giuliolunati/ren-c,mbk/ren-c