From 8f0f0a863582f8f6e2decc9a446541b9dce7e19f Mon Sep 17 00:00:00 2001
From: Wolfgang Bangerth <bangerth@colostate.edu>
Date: Mon, 27 Dec 2021 22:32:10 -0700
Subject: [PATCH] Avoid a warning about an unused variable.

---
 source/base/data_out_base.cc | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/source/base/data_out_base.cc b/source/base/data_out_base.cc
index f924359703..5ded5afceb 100644
--- a/source/base/data_out_base.cc
+++ b/source/base/data_out_base.cc
@@ -4104,7 +4104,8 @@ namespace DataOutBase
       if (patches.size() == 0)
         return;
 #endif
-      constexpr int dim      = 2;
+      constexpr int dim = 2;
+      (void)dim;
       constexpr int spacedim = 2;
 
       const unsigned int n_data_sets = data_names.size();
-- 
2.39.5