User-Agent:       Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML,
like Gecko) Chrome/58.0.3029.110 Safari/537.36 OPR/45.0.2552.888
Build Identifier: 

FIrewall crashes when I add an application rule from empty list. I think it's a
null exception. Oh, why?

Reproducible: Didn't try

Steps to Reproduce:
1.Open YaST, Firewall.
2.Add rule for application
3. Add all applications from the list before it willn't be empty
4. add current application
5. ??? 
6. (Profit?) Null exception crash
Actual Results:  
crash without a message

Expected Results:  
blocked action to add an empty application

oh, rly?