[Linux] Fix the missed "tab" key
[Linux] Fix the missed "tab" key

Without this change, "tab" (0x09) will result in a "key" being 0 (EVK_NONE), and
ignored

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