Merge branch 'dmricciuto/elm/seed_bugfix' (PR E3SM-Project#6370)

Fix for seed initialization that caused C:N an C:P ratios to diverge
for some grid cells in transient simulations.

Fixes E3SM-Project#6368

[non-BFB]

components/elm/src/biogeochem/ComputeSeedMod.F90

@@ -183,16 +183,10 @@ subroutine LeafProportions(pft_type, ignore_current_state, &
     pstorage = 0._r8
     pxfer    = 0._r8
 
-    if (tot_leaf == 0._r8 .or. ignore_current_state) then
-       if (veg_vp%evergreen(pft_type) == 1._r8) then
-          pleaf    = 1._r8
-       else
-          pstorage = 1._r8
-       end if
+    if (veg_vp%evergreen(pft_type) == 1._r8) then
+       pleaf    = 1._r8
     else
-       pleaf    = leaf        /tot_leaf
-       pstorage = leaf_storage/tot_leaf
-       pxfer    = leaf_xfer   /tot_leaf
+       pstorage = 1._r8
     end if
 
   end subroutine LeafProportions