lbxgui: Fix an error handling regression.

If the framebuffer allocation fails, it still gets passed to
render_to_pixbuf.  This causes an assertion failure.

diff --git a/src/gui/lbxgui.c b/src/gui/lbxgui.c
index 2c1235aab0d3924c76a04955a586202f96dd8c39..9e462e65dd5c7df7eecc021111b267b4f7d9c86f 100644 (file)
--- a/src/gui/lbxgui.c
+++ b/src/gui/lbxgui.c
@@ -63,7 +63,7 @@ void set_frame(GtkSpinButton *spin, gpointer data)
 {
        unsigned frame = gtk_spin_button_get_value_as_int(spin);
 
-       if (image)
+       if (image && framebuf)
                render_to_pixbuf(image, framebuf, frame);
        gdk_window_invalidate_rect(canvas->window, NULL, FALSE);
 }