Fix -Wsuggest-final-types warning

[Jan Hubicka]

Hi,
this patch fixes thinko and makes the type warned about to be output right.  
Thanks
to Trevor for noticing that.

Bootstrapped/regtested x86_64-linux, comitted.

Honza

        * ipa-devirt.c (odr_type_warn_count): Add type.
        (possible_polymorphic_call_targets): Set it.
        (ipa_devirt): Use it.
Index: ipa-devirt.c
===================================================================
--- ipa-devirt.c        (revision 213518)
+++ ipa-devirt.c        (working copy)
@@ -2518,6 +2518,7 @@ devirt_variable_node_removal_hook (varpo
 /* Record about how many calls would benefit from given type to be final.  */
 struct odr_type_warn_count
 {
+  tree type;
   int count;
   gcov_type dyn_count;
 };
@@ -2738,6 +2739,7 @@ possible_polymorphic_call_targets (tree
       if (binfo)
        matched_vtables.add (BINFO_VTABLE (binfo));
 
+
       /* Next walk recursively all derived types.  */
       if (context.speculative_maybe_derived_type)
        for (i = 0; i < speculative_outer_type->derived_types.length(); i++)
@@ -2818,6 +2820,8 @@ possible_polymorphic_call_targets (tree
                  final_warning_records->type_warnings[outer_type->id].count++;
                  final_warning_records->type_warnings[outer_type->id].dyn_count
                    += final_warning_records->dyn_count;
+                 final_warning_records->type_warnings[outer_type->id].type
+                   = outer_type->type;
                  (*slot)->type_warning = outer_type->id + 1;
                }
              if (complete
@@ -3274,12 +3278,12 @@ ipa_devirt (void)
               i < final_warning_records->type_warnings.length (); i++)
            if (final_warning_records->type_warnings[i].count)
              {
-               odr_type type = odr_types[i];
-               warning_at (DECL_SOURCE_LOCATION (TYPE_NAME (type->type)),
+               tree type = final_warning_records->type_warnings[i].type;
+               warning_at (DECL_SOURCE_LOCATION (TYPE_NAME (type)),
                            OPT_Wsuggest_final_types,
                            "Declaring type %qD final "
                            "would enable devirtualization of %i calls",
-                           type->type,
+                           type,
                            final_warning_records->type_warnings[i].count);
              }
        }