MFC r315595,r315603:

MFC r315595,r315603:

r315595:

Remove a commented out line before kvm_getprocs(3)

The commented out return value for kvm_getprocs(3) was misleading -- the
uncommented line is correct.

No content change

r315603:

kvm_close(3): return `error` instead of blindly returning `0`

`error` is the accumulated error from previous close(2) calls.

This bug has been present since the libcall's import from 4.4BSD
Lite (r1573).

Noticed by:	vangyzen (D10022)
Relnotes:	yes

git-svn-id: svn://svn.freebsd.org/base/stable/10@316040 ccf9f872-aa2e-dd11-9fc8-001c23d0bc1f