[gold patch] Fix C++11 warnings

[Ian Lance Taylor]

Cary Coutant <ccoutant@google.com> writes:

> 2011-12-16  Cary Coutant  <ccoutant@google.com>
>
> 	* dwarf_reader.cc (Sized_dwarf_line_info::read_lines): Add casts.
> 	* i386.cc (Target_i386::do_code_fill): Use char constants for nop
> 	arrays.
> 	* x86_64.cc (Target_x86_64::do_code_fill): Likewise.

This is OK.

Thanks.

Ian