Set of 16 potential bugs

[Maxime Villard <max%M00nBSD.net@localhost>]

Hi,
I've been making a code scanner for a while, and I recently launched it
on NetBSD's source tree to test some new rules. It found 16 potential
bugs that I've summed up here:

        http://M00nBSD.net/ae123a9bae03f7dde5c6d654412daf5a.html

I do not provide patches as I don't always know what's the better fix.
Anyway, if you are the developer of one of the affected components
- kernel, dev or other arch stuff - it should be easy to fix.

Maxime