fix to at&u6502 when already up-to-date
fix to at&u6502 when already up-to-date

git-svn-id: d8bfcd070c2c81762cca1b3912331324182919ba@18689 0d6f1817-ed0e-0410-87c9-987e46238f29

bozimmerman/Zimodem,bozimmerman/Zimodem