[binutils-gdb] struct breakpoint: Fix indentation

[sergiodj+buildbot@sergiodj.net]

*** TEST RESULTS FOR COMMIT bfb8cf9091a174b42beeff3d014173084413af4d ***

Author: Pedro Alves <palves@redhat.com>
Branch: master
Commit: bfb8cf9091a174b42beeff3d014173084413af4d

struct breakpoint: Fix indentation

I'm going to need to touch all these fields to add in-class
initialization anyway, might as well take the opportunity to finally
fix this...

gdb/ChangeLog:
2017-04-13  Pedro Alves  <palves@redhat.com>

	* breakpoint.h (struct breakpoint): Reindent.