Added P4est guard to ensure consistency with the reste of the particle library

diff --git a/include/deal.II/particles/data_out.h b/include/deal.II/particles/data_out.h
index c760c88e1a75cc1bfedcad0ace24be13afe9c759..e305a15e1079026a4ff9d8ec8fa23942fe42fd4e 100644 (file)
--- a/include/deal.II/particles/data_out.h
+++ b/include/deal.II/particles/data_out.h
@@ -24,6 +24,9 @@
 
 DEAL_II_NAMESPACE_OPEN
 
+#ifdef DEAL_II_WITH_P4EST
+
+
 namespace Particles
 {
   template <int dim, int spacedim>
@@ -99,6 +102,8 @@ namespace Particles
 
 } // namespace Particles
 
+#endif // DEAL_II_WITH_P4EST
+
 DEAL_II_NAMESPACE_CLOSE
 
 #endif