BUG FIX: u_new and r_new were left uninitialized in ConvCrit
BUG FIX: u_new and r_new were left uninitialized in ConvCrit

This probably didn't have much effect, as both effectively get
(re)initialized in check.

bsilbaugh/NumLib,bsilbaugh/NumLib,bsilbaugh/NumLib,bsilbaugh/NumLib