xgbutil has been modified to use unsigned integers instead of signed ones

[errnoh]

BurntSushi/xgbutil@d3467c5 has broken go.wde/xgb, preventing it from building. The commit changed a lot stuff inside xgbutil to use unsigned integers and go.wde doesn't reflect these changes yet.

Errors when trying to build:
go.wde/xgb/icon.go:57: cannot use width (type int) as type uint in field value
go.wde/xgb/icon.go:58: cannot use height (type int) as type uint in field value
go.wde/xgb/icon.go:59: cannot use data (type []int) as type []uint in field value

[skelterjohn]

fixed with latest commit