Make a true class out of TriaNumberCache<dim> in order not to confuse

the forward declarations script.

git-svn-id: https://svn.dealii.org/trunk@3242 0785d39b-7218-0410-832d-ea1e28bc413d

diff --git a/deal.II/deal.II/include/grid/tria.h b/deal.II/deal.II/include/grid/tria.h
index c7c2ae11a8a4a3cc6c8e568a09d67d63423cfc9a..c152cdf94e2d462d5afea2ef96af32cbe2a89b4e 100644 (file)
--- a/deal.II/deal.II/include/grid/tria.h
+++ b/deal.II/deal.II/include/grid/tria.h
@@ -304,7 +304,8 @@ class TriaDimensionInfo<3>
  * @author Wolfgang Bangerth, 1999
  */
 template <int dim>
-struct TriaNumberCache;
+struct TriaNumberCache
+{};
 
 /**
  * Cache class used to store the number of used and active elements