Re: objdump read_section_stabs

Also fix ubsan "applying zero offset to null pointer".

	* objdump.c (print_section_stabs): Avoid ubsan warning.

binutils/objdump.c

@@ -4499,7 +4499,7 @@ print_section_stabs (bfd *abfd,
   bfd_byte *stabp, *stabs_end;
 
   stabp = stabs;
-  stabs_end = stabp + stab_size;
+  stabs_end = PTR_ADD (stabp, stab_size);
 
   printf (_("Contents of %s section:\n\n"), sanitize_string (stabsect_name));
   printf ("Symnum n_type n_othr n_desc n_value  n_strx String\n");