Add safeties for =destroy hooks. FossilOrigin-Name: 2fae5297a0d0598cc3580777688b4f4307de008d4f379d2fb224c8a74cb9b708
FossilOrigin-Name: e866fb59b96496de50c85d483ec89bdb8f48fb2d24c43b8bfecdc0a968962114