Fix the previous commit so that it doesn't produce a warning.

diff --git a/source/grid/grid_tools.cc b/source/grid/grid_tools.cc
index 6e9f8ea5198ee0032d4d994e3f4b6858fa428390..47570805b758ee5925fd3774f13afdce9dae769a 100644 (file)
--- a/source/grid/grid_tools.cc
+++ b/source/grid/grid_tools.cc
@@ -764,7 +764,7 @@ namespace GridTools
                 }
             }
 
-#if DEAL_II_USE_P4EST
+#ifdef DEAL_II_USE_P4EST
         distributed_triangulation
         ->communicate_locally_moved_vertices(locally_owned_vertices);
 #else