Fix for structs and nondet initialisation of pointers

Author: tautschnig

regression/cbmc/Initialization7/test.desc

@@ -1,4 +1,4 @@
-KNOWNBUG
+CORE
 main.c
 
 ^EXIT=10$

src/pointer-analysis/value_set.cpp

@@ -358,7 +358,9 @@ void value_sett::get_value_set_rec(
 
   const typet &expr_type=ns.follow(expr.type());
 
-  if(expr.id()==ID_unknown || expr.id()==ID_invalid)
+  if(
+    expr.id() == ID_unknown || expr.id() == ID_invalid ||
+    expr.id() == ID_nondet_symbol)
   {
     insert(dest, exprt(ID_unknown, original_type));
   }
@@ -1138,9 +1140,9 @@ void value_sett::assign(
                 "type:\n"+type.pretty();
 
         rhs_member=make_member(rhs, name, ns);
-
-        assign(lhs_member, rhs_member, ns, is_simplified, add_to_sets);
       }
+
+      assign(lhs_member, rhs_member, ns, is_simplified, add_to_sets);
     }
   }
   else if(type.id()==ID_array)