Hopefully fix build breakage with gcc passing void * instead of char *
to "%s" format string after r272280.

PR:		83099 193927
MFC after:	3 days
X-MFC with:	r272280


git-svn-id: svn+ssh://svn.freebsd.org/base/head@272281 ccf9f872-aa2e-dd11-9fc8-001c23d0bc1f