From: Matthias Maier <tamiko@43-1.org>
Date: Wed, 13 Feb 2019 22:51:16 +0000 (-0600)
Subject: examples/step-20: Simplify code by using a temporary
X-Git-Tag: v9.1.0-rc1~332^2~2
X-Git-Url: https://gitweb.dealii.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=094a1d2acb10c2fc946e5e9728427c9790f30744;p=dealii.git

examples/step-20: Simplify code by using a temporary
---

diff --git a/examples/step-20/step-20.cc b/examples/step-20/step-20.cc
index f1b12f6e18..89ed11124b 100644
--- a/examples/step-20/step-20.cc
+++ b/examples/step-20/step-20.cc
@@ -613,10 +613,9 @@ namespace Step20
     // applies a fixed number of 30 (inexpensive) CG iterations:
     IterationNumberControl iteration_number_control_aS(30, 1.e-18);
     SolverCG<>             solver_aS(iteration_number_control_aS);
-    PreconditionIdentity   preconditioner_aS;
 
     const auto preconditioner_S =
-      inverse_operator(op_aS, solver_aS, preconditioner_aS);
+      inverse_operator(op_aS, solver_aS, PreconditionIdentity());
 
     // Now on to the first equation. The right hand side of it is
     // $B^TM^{-1}F-G$, which is what we compute in the first few lines. We