[RFA] read_reg() patch

[Mark Kettenis]

   From: "Martin M. Hunt" <hunt@redhat.com>
   Date: Tue, 20 Jul 2004 12:16:51 -0700

   2004-07-20  Kevin Buettner and Martin Hunt  <hunt@redhat.com>

	   * dwarf2-frame.c (read_reg): Add a call to
   store_unsigned_integer.
	   This extracts the least significant register_size() bits and
	   extends it to the size of a pointer. Without this, big-endian
	   targets where pointer size != register size breaks.

The formatting of this ChangeLog entry isn't right.  Please look at
the existing ChangeLogs to see how you should write them.  Also move
the explanation of what the code does to the code.  The ChangeLog
should just say what's changed, not why.

I also think that the code itself is pretty unreadable.  There are too
many nested function calls.  I think it could be improved by using a
(temporary) local variable to store the result of
extract_unsigned_integer().

Mark