K 10 svn:author V 3 alc K 8 svn:date V 27 2019-09-19T20:45:23.610640Z K 7 svn:log V 209 MF r349585 Tidy up pmap_copy(). Notably, deindent the innermost loop by making a simple change to the control flow. Replace an unnecessary test by a KASSERT. Add a comment explaining an obscure test. END