EAlpha not updated why?

[rancheng]

I have asked the same question in DSO issue #212

LDSO/src/frontend/CoarseInitializer.cc

Lines 340 to 352 in 1c1e3c9

	Accumulator11 EAlpha;
	EAlpha.initialize();
	for (int i = 0; i < npts; i++) {
	Pnt *point = ptsl + i;
	if (!point->isGood_new) {
	E.updateSingle((float) (point->energy[1]));
	} else {
	point->energy_new[1] = (point->idepth_new - 1) * (point->idepth_new - 1);
	E.updateSingle((float) (point->energy_new[1]));
	}
	}
	EAlpha.finish();
	float alphaEnergy = alphaW * (EAlpha.A + refToNew.translation().squaredNorm() * npts);

why note update EAlpha and use EAlpha.A to calculate AlphaEnergy?