Initialize SUN* objects

diff --git a/source/sundials/kinsol.cc b/source/sundials/kinsol.cc
index e1817e7f3369422ffbfe9aba6fd1ec03943cdc51..5661507f0d6dac8257c3bf75bfa29f63dec1c848 100644 (file)
--- a/source/sundials/kinsol.cc
+++ b/source/sundials/kinsol.cc
@@ -265,8 +265,8 @@ namespace SUNDIALS
     AssertKINSOL(status);
 
 #if DEAL_II_SUNDIALS_VERSION_GTE(3,0,0)
-    SUNMatrix J;
-    SUNLinearSolver LS;
+    SUNMatrix J = nullptr;
+    SUNLinearSolver LS = nullptr;
 #endif
 
     if (solve_jacobian_system)