Further fix #6453 (#6804)

There's one spot left in issue #6453, that is the call to `std::allocator<T>::destroy` in `mkMetaKind`. And this commit fixes it.

diff --git a/src/expr/mkmetakind b/src/expr/mkmetakind
index 88208d77690d9157af9478485323132e5a3a6083..f9b49fc0acd994397fbc30b4661c2f077254cf3a 100755 (executable)
--- a/src/expr/mkmetakind
+++ b/src/expr/mkmetakind
@@ -279,7 +279,7 @@ $3 const& NodeValue::getConst< $3 >() const {
   cname=`echo "$3" | awk 'BEGIN {FS="::"} {print$NF}'`
   metakind_constDeleters="${metakind_constDeleters}
   case kind::$1:
-    std::allocator< $3 >().destroy(reinterpret_cast< $3* >(nv->d_children));
+    std::destroy_at(reinterpret_cast< $3* >(nv->d_children));
     break;
 "
 }