Fix build with gcc 4.5
https://bugs.gentoo.org/show_bug.cgi?id=321293

Index: amyedit-1.0/src/Preferences.cc
===================================================================
--- amyedit-1.0.orig/src/Preferences.cc
+++ amyedit-1.0/src/Preferences.cc
@@ -211,7 +211,7 @@ int Preferences::run()
 }
 
 void Preferences::edit_latex_commands(){
-	EditLatexCommands::EditLatexCommands dialog(this);
+	EditLatexCommands dialog(this);
 	dialog.run();
 	Amy::populate_text_list_model_from_list(previewoptionslist->get_model(), PrefStruct::instance()->get_keys("Commands"), true);
 	previewoptionslist->select(PrefStruct::instance()->get<Glib::ustring>("General", "preview_combo"));