Fix stack offset in Mach-O output for -P compact_unwind.

Fix stack offset in Mach-O output for -P compact_unwind.

Minor fix in compact unwind output: to be more readable, the stack offset
for indirect compact unwind entries are mutiplied by its factor (4 or 8).

binutils/
	* od-macho.c (dump_unwind_encoding_x86): Set the factor.
	(dump_exe_compact_unwind): Change the condition.  Improve
	indentation.