This branch is in bro, pysubnettree, broccoli, broccoli-python, and binpac repos and fixes various defects reported by Coverity.
I can't remember any of great significance. There were mostly two categories:
issues that are unlikely to be exercised, but could cause a modest problem (though there's often bigger issues if those code paths were ever taken...)
issues that are likely to be exercised, but haven't posed much of a problem (logically or empirically)
I'd say just merge it in before the 2.2 release, but cherry-picking or postponing altogether also seem ok.