Fix macOS 10.8 build.

diff --git a/src/wx/system_information_dialog.cc b/src/wx/system_information_dialog.cc
index 79a7f735acb0d878334c48a750a940a631262c1e..fbae2e010ec57f7cbe9dc455e399b1a2f87c3401 100644 (file)
--- a/src/wx/system_information_dialog.cc
+++ b/src/wx/system_information_dialog.cc
@@ -75,7 +75,7 @@ SystemInformationDialog::SystemInformationDialog(wxWindow* parent, FilmViewer co
 
 #else
 
-SystemInformationDialog::SystemInformationDialog(wxWindow* parent, FilmViewer&)
+SystemInformationDialog::SystemInformationDialog(wxWindow* parent, FilmViewer const&)
        : TableDialog (parent, _("System information"), 2, 1, false)
 {
        add (_("OpenGL version"), true);