Netedit crash when pushing "Load / Save TLS program" in TLS editor without selecting a junction

[ZoltanBaksa]

I select a junction with wrong number of phase elements (more than the number of connections) and I use the "Cleanup States" button. The phases are corrected, modifications could be saved in "Modifications" frame. After storing the modifications the TLS editor is cleared, no junction is selected, but the Load Tls Program and Save Tls Program buttons are still active. When I push the load or save button, after the file selection window is closed, Netedit crashes.
Used SUMO version: 1.0.1 + 0019-83bdcaf4ad