Ensure that every ENTRY(foo) has a matching END(foo).
It allows to build with newer binutils

Differential Revision:	https://reviews.freebsd.org/D877
Reviewed by:	jhibbits


git-svn-id: svn+ssh://svn.freebsd.org/base/head@272362 ccf9f872-aa2e-dd11-9fc8-001c23d0bc1f