From ed48881c9f74a107ca5818ac0b75679800edbe79 Mon Sep 17 00:00:00 2001
From: Jukka Aho <jukka.aho@kapsi.fi>
Date: Mon, 12 Dec 2016 07:28:52 +0200
Subject: [PATCH] call update_xdmf! only if Xdmf object is attached to solver.

---
 src/solvers_modal.jl | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/solvers_modal.jl b/src/solvers_modal.jl
index 9547a11..849fa08 100644
--- a/src/solvers_modal.jl
+++ b/src/solvers_modal.jl
@@ -336,7 +336,9 @@ function (solver::Solver{Modal})(; show_info=true, debug=false,
         end
     end
 
-    update_xdmf!(solver)
+    if !isnull(solver.xdmf)
+        update_xdmf!(solver)
+    end
     return true
 
 end