[Patch bfd/mach-o] implement bfd_get_arch_size for mach-o.

[Iain Sandoe]

without this we (eventually, several patches away) end up with  
nonsense when processing cfi directives.

OK?
Iain

bfd:

	* bfd.c (bfd_get_arch_size): Implement for mach-o.

bfd/bfd.c |    2 ++
  1 files changed, 2 insertions(+), 0 deletions(-)

diff --git a/bfd/bfd.c b/bfd/bfd.c
index 7c14c7a..1a9cc79 100644
--- a/bfd/bfd.c
+++ b/bfd/bfd.c
@@ -985,6 +985,8 @@ bfd_get_arch_size (bfd *abfd)
  {
    if (abfd->xvec->flavour == bfd_target_elf_flavour)
      return get_elf_backend_data (abfd)->s->arch_size;
+  else if (abfd->xvec->flavour == bfd_target_mach_o_flavour)
+    return (abfd)->arch_info->bits_per_address;

    return -1;
  }