bugfix

com.angoosh.RDPConnect/main.py

@@ -277,7 +277,7 @@ class MyApp(Adw.Application):
             password = conn_info["passwd"]
             useratip = conn_info["user"] + "@" + conn_info["ip"]
             with open(HOMEDIR+"/.config/rdpconnect/history.json", "a") as hist_file:
-                hist_id = str(int(max(hist_info)) + 1)
+                hist_id = str(int(max(hist_info, default=0)) + 1)
                 hist_info[hist_id] = useratip
                 js = json.dumps(hist_info, sort_keys=True, indent=4, separators=(',', ': '))
                 hist_file.write(js)