Fixed an issue in which unnecessary separators could appear in Ringtone menu in preferences.
Fixed an issue in which unnecessary separators could appear in Ringtone menu in preferences.

nriley/Telephone,thinkski/Telephone,mralexgray/SwitchBoard,mobdim/Telephone,einfallstoll/Telephone,martinkero/Telephone,inz/Telephone,thierryc/Telephone