[libgdamm] Use libsigc++-3.0 syntax.

[Murray Cumming <murrayc src gnome org>]

commit d2fa1e84cc6201524077d7d2bf0dad2cdfd57b7a
Author: Murray Cumming <murrayc murrayc com>
Date:   Mon Nov 14 13:12:35 2016 +0100

    Use libsigc++-3.0 syntax.

 libgda/src/quarklist.hg |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/libgda/src/quarklist.hg b/libgda/src/quarklist.hg
index 54ba809..1b55a74 100644
--- a/libgda/src/quarklist.hg
+++ b/libgda/src/quarklist.hg
@@ -50,7 +50,7 @@ class QuarkList
   _WRAP_METHOD(Glib::ustring find(const Glib::ustring& name) const, gda_quark_list_find)
   _WRAP_METHOD(void remove(const Glib::ustring& name), gda_quark_list_remove)
       
-  typedef sigc::slot<void, Glib::ustring, Glib::ustring> ForeachSlot;
+  typedef sigc::slot<void(Glib::ustring, Glib::ustring)> ForeachSlot;
   _WRAP_METHOD_DOCS_ONLY(gda_quark_list_foreach)
   void foreach(const ForeachSlot& func);