Add some missing header files for sundials_wrapper.h

diff --git a/include/deal.II/sundials/sunlinsol_wrapper.h b/include/deal.II/sundials/sunlinsol_wrapper.h
index d90dc94e617e0d38f98c81c604dc54c266fa9445..f1996cccebe9a8161f91531b6dc0f171f8190342 100644 (file)
--- a/include/deal.II/sundials/sunlinsol_wrapper.h
+++ b/include/deal.II/sundials/sunlinsol_wrapper.h
@@ -23,6 +23,9 @@
 
 #    include <sundials/sundials_linearsolver.h>
 
+#    include <functional>
+#    include <memory>
+
 DEAL_II_NAMESPACE_OPEN
 
 namespace SUNDIALS