step to represent:

1. press "record" to record first track
2. press "stop", then save the track or not
3. press "record" to record secound track

gsr crashed

backtrace:

Program received signal SIGSEGV, Segmentation fault.

+ Trace 153118

in the gsr-window.c:1792 record_input_changed_cb ()

text = gtk_combo_box_get_active_text (input); got a 0x0 return value, then the 'text' was used to compare with t->label with strcmp, then crashed.

Why the record_input_changed_cb() was called when I start to record second track? I reviewed the code, I guess it is called by the "Changed" signal emited by the 

gtk_combo_box_set_active (GTK_COMBO_BOX (window->priv->input), i - 1);

in the

fill_record_input (GSRWindow *window) from gsr-window.c:1812

which called from 

record_cb (GtkAction *action,
           GSRWindow *window)
at gsr-window.c:1267 ?