[RFC/PATCH] Clean up unused variables (and prepare for `-Wunused-variable' flag)

[Tom Tromey]

>>>>> "Sergio" == Sergio Durigan Junior <sergiodj@redhat.com> writes:

Sergio> Thanks for the reviews, guys.  If you approve the obvious
Sergio> non-initialized bits, I'll gladly commit it (except for dwarf2read.c
Sergio> changes, as Doug asked).

Yeah, please do.

Tom