Gtk: Fix crash when GtkGuiMain::set_package(null) was called

1 files changed, 8 insertions, 2 deletions

diff --git a/src/gui_gtk.cc b/src/gui_gtk.cc
index 062ac4c..af67921 100644
--- a/src/gui_gtk.cc
+++ b/src/gui_gtk.cc
@@ -1907,8 +1907,14 @@ void GtkGuiMain::set_package(std::unique_ptr<AttributedText>&& text)  {
   package_.swap(text);
   auto wnd = reinterpret_cast<MainAppWindow*>(window());
   if (wnd) {
-    gtk_text_view_set_buffer(GTK_TEXT_VIEW(wnd->bottom_),
-                             static_cast<GtkAttributedText*>(package_.get())->buffer());
+    GtkTextBuffer* buf;
+    if (package_) {
+      buf = static_cast<GtkAttributedText*>(package_.get())->buffer();
+    } else {
+      buf = gtk_text_buffer_new(NULL);
+    }
+    gtk_text_view_set_buffer(GTK_TEXT_VIEW(wnd->bottom_), buf);
+    if (!package_) g_object_unref(buf);
   }
 }