fix enumerate gathering in new udt building pass

src/raddbgi_from_pdb/raddbgi_from_pdb.c

@@ -1686,6 +1686,15 @@ p2r_udt_convert_task__entry_point(Arena *arena, void *p)
         //- rjf: enums -> equip enumerates
         //
         case CV_LeafKind_ENUM:
+        {
+          CV_LeafEnum *lf = (CV_LeafEnum *)itype_leaf_first;
+          if(lf->props & CV_TypeProp_FwdRef)
+          {
+            break;
+          }
+          field_itype = lf->field_itype;
+        }goto equip_enum_vals;
+        equip_enum_vals:;
         {
           Temp scratch = scratch_begin(&arena, 1);