Remove stray newline from err() calls.

err() does this itself, and includes strerror() too. Also fix some err()
calls that should have been errx().

(I'll remember this patch next time I'm arguing that error() from
<error.h> is much less error-prone than remembering which of err()
or errx() is wanted from <err.h> :-) )

Test: treehugger
Change-Id: I5bf6643a373ef69b69ffb03aa11876bfc497280c
4 files changed