From cdf1d1a73c255c198ff0356472bb0ea76937ae76 Mon Sep 17 00:00:00 2001
From: hogehiga <hogehiga@gmail.com>
Date: Mon, 11 Apr 2016 20:49:30 +0900
Subject: [PATCH] Fix crash.

Fix crash when click [Preferences]-[Behavior]-[Additional Buttons]-([Edit] or [Remove]) without selecting a button.
---
 prefs.cc | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/prefs.cc b/prefs.cc
index 202973db..41caf749 100644
--- a/prefs.cc
+++ b/prefs.cc
@@ -426,6 +426,8 @@ void Prefs::on_edit_extra() {
 	etv->get_cursor(path, col);
 	if (!path.gobj())
 		return;
+	if (path.empty())
+		return;
 	Gtk::TreeIter iter = *etm->get_iter(path);
 	std::vector<ButtonInfo>::iterator i = (*iter)[ecs.i];
 	SelectButton sb(*i, true, true);
@@ -448,6 +450,8 @@ void Prefs::on_remove_extra() {
 	etv->get_cursor(path, col);
 	if (!path.gobj())
 		return;
+	if (path.empty())
+		return;
 	Gtk::TreeIter iter = *etm->get_iter(path);
 	Atomic a;
 	std::vector<ButtonInfo>::iterator i = (*iter)[ecs.i];