[sane-devel] Fixing compiler warnings

[Bertrik Sikken]

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Hi all,

Last time I compiled sane-backends, I got quite a lot of
compile warnings. Some of these may be harmless, others may
be hiding actual bugs. I think it's good practice to attempt
to fix *all* warnings. This way a developer no longer has to
sift out the harmful from the harmless ones, but can simply
consider each warning as something to be dealt with.

I won't mind working on fixing some of them. I'll have a look
at backends and other subsystems that are part of the official
sane-backends sources.

Kind regards,
Bertrik
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