[PATCH] Use DW_FORM_ref_addr for DIE offset in .debug_names

[Tom Tromey]

>>>>> "Tom" == Tom Tromey <tom@tromey.com> writes:

Tom> Today I realized that while the .debug_names writer uses DW_FORM_udata
Tom> for the DIE offset, DW_FORM_ref_addr would be more appropriate here.
Tom> This patch makes this change.

Tom> Bug: https://sourceware.org/bugzilla/show_bug.cgi?id=31361

I'm checking this in.

Tom