readelf memory leaks

readelf memory leaks

This fixes two leaks found in the new code supporting display of
dynamic symbols retrieved via dynamic tags.

	* readelf.c (get_num_dynamic_syms): Formatting.  Don't return
	on error without freeing.
	(process_dynamic_section): Don't recreate dynamic symbols from
	dynamic tag info when the dynamic symbols have already been
	read via section headers.