bucket: add count guard for branch pages in Stats (backport 1.4)#1172

ahrtr merged 1 commit intoetcd-io:release-1.4etcd-io/bbolt:release-1.4from

quocvibui:fix-stats-branch-page-oob-1.4quocvibui/bbolt:fix-stats-branch-page-oob-1.4Copy head branch name to clipboard