Re: Bug 23686, two segment faults in nm

The fix for pr23686 had a hole in the reloc address sanity check,
the calculation could overflow.  Note that stabsize is known to be a
non-zero multiple of 12 so stabsize - 4 can't underflow.

	PR 23686
	* syms.c (_bfd_stab_section_find_nearest_line): Correct
	r->address sanity check.