Merge branch 'atmosphere/thompson_uninit_mvd_fix' into hotfix-v8.0.2 (PR #1152)

This merge initializes two local variables, mvd_r and mvd_c, in the mp_thompson
routine to avoid the potential use of uninitialized memory.

Note: Identical changes to those included in this merge have separately been
introduced into newer versions of the Thompson microphysics scheme, and so the
changes here can be considered a back-port of these fixes.

This merge closes Issue #1150.

Author: mgduda

src/core_atmosphere/physics/physics_wrf/module_mp_thompson.F

@@ -1593,6 +1593,8 @@ subroutine mp_thompson (qv1d, qc1d, qi1d, qr1d, qs1d, qg1d, ni1d, &
          smod(k) = 0.
          smoe(k) = 0.
          smof(k) = 0.
+         mvd_r(k) = 0.
+         mvd_c(k) = 0.
       enddo
 
 !+---+-----------------------------------------------------------------+