* manual/platform.texi: Add missing @end deftypefun.

Fixup for commit d116b7c414c8239b677e341ac517745db689ac2d.
_dl_non_dynamic_init declaration cleanup.

	* sysdeps/mach/hurd/i386/init-first.c (_dl_non_dynamic_init):
	Don't declare.

Continuation of commit bc16e260d0e74b36e48d30edc6ea4f1152700c09.