etm_audio.c: fix off-by-one error in auw of FIR coefficients This fix was already made in FC Tourmaline a while back, but it is also the kind of bugfix that deserves to be backported to Magnetite and Selenite as well.

/* This file is needed just to make sure the archiver isn't called
 * with an empty list of object files. */

static void aci_dummy_dont_call_this(void)
{
}