fixed silly typo in do_callback
fixed silly typo in do_callback

angerangel/r3bazaar,rgchris/ren-c,codebybrett/ren-c,kealist/ren-c,rebol/rebol,giuliolunati/ren-c,giuliolunati/ren-c,mbk/ren-c,hostilefork/rebol,rebolsource/r3,hostilefork/rebol,draegtun/ren-c,mbk/ren-c,rebolsource/r3,rebol/rebol,earl/r3,codebybrett/ren-c,earl/r3,kealist/ren-c,rgchris/ren-c,draegtun/ren-c,kealist/ren-c,hostilefork/rebol,hostilefork/rebol,codebybrett/ren-c,mbk/ren-c,hostilefork/rebol,draegtun/ren-c,giuliolunati/ren-c,draegtun/ren-c,kealist/ren-c,codebybrett/ren-c,giuliolunati/ren-c,earl/r3,earl/r3,rgchris/ren-c,hostilefork/rebol,codebybrett/ren-c,codebybrett/ren-c,draegtun/ren-c,kealist/ren-c,rgchris/ren-c,draegtun/ren-c,giuliolunati/ren-c,angerangel/r3bazaar,angerangel/r3bazaar,mbk/ren-c,rebol/rebol,rebolsource/r3,angerangel/r3bazaar,kealist/ren-c,rgchris/ren-c,rebol/rebol