From a5e1a72930e4b8f7b791125dbb1ea35f9a480092 Mon Sep 17 00:00:00 2001
From: Daniel Garcia-Sanchez <daniel.garcia-sanchez@insp.upmc.fr>
Date: Sat, 2 Feb 2019 14:26:44 +0100
Subject: [PATCH] Remove unused variable warning

---
 source/grid/grid_in.cc | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/source/grid/grid_in.cc b/source/grid/grid_in.cc
index aaa1b79d94..ad18740f28 100644
--- a/source/grid/grid_in.cc
+++ b/source/grid/grid_in.cc
@@ -2436,9 +2436,12 @@ GridIn<3>::read_netcdf(const std::string &filename)
   // take numbers::internal_face_boundary_id
   // as it denotes an internal face
   for (const int id : bmarker)
-    Assert(0 <= id && static_cast<types::boundary_id>(id) !=
-                        numbers::internal_face_boundary_id,
-           ExcIO());
+    {
+      Assert(0 <= id && static_cast<types::boundary_id>(id) !=
+                          numbers::internal_face_boundary_id,
+             ExcIO());
+      (void)id;
+    }
 
   // finally we setup the boundary
   // information
-- 
2.39.5