From: Peter Munch <peterrmuench@gmail.com>
Date: Wed, 21 Dec 2022 17:13:50 +0000 (+0100)
Subject: Fix warning
X-Git-Tag: v9.5.0-rc1~711^2
X-Git-Url: https://gitweb.dealii.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=refs%2Fpull%2F14603%2Fhead;p=dealii.git

Fix warning
---

diff --git a/source/lac/petsc_parallel_block_sparse_matrix.cc b/source/lac/petsc_parallel_block_sparse_matrix.cc
index 4d0accae14..a290cfb602 100644
--- a/source/lac/petsc_parallel_block_sparse_matrix.cc
+++ b/source/lac/petsc_parallel_block_sparse_matrix.cc
@@ -35,6 +35,7 @@ namespace PETScWrappers
     BlockSparseMatrix::~BlockSparseMatrix()
     {
       PetscErrorCode ierr = destroy_matrix(petsc_nest_matrix);
+      (void)ierr;
       AssertNothrow(ierr == 0, ExcPETScError(ierr));
     }