* dwarf2.c: Formatting.

	* dwarf2.c: Formatting.
	(arange_add): Pass in unit rather than bfd.  Update callers.
	Ignore empty ranges.  Don't ask for cleared memory.
	(parse_comp_unit): Only set unit->base_address if processing
	DW_TAG_compile_unit.
	(find_debug_info): Optimise section lookup.
	(place_sections): Use bfd_alloc for stash->adjusted_sections.
	(find_line): Match previously parsed comp unit addresses as we
	do for newly parsed comp units.