atlas post-processor on 32bit uint32 overflows int

post-processor/atlas/util.go:16: constant 4294967295 overflows int

Signed-off-by: BlackEagle <ike.devolder@gmail.com>
Merge pull request #1748 from BlackIkeEagle/constant-4294967295-overflows-int

atlas post-processor on 32bit uint32 overflows int