The code in _initServices() uses undefined as expected -- to indicate that
a field doesn't exist. OTOH, when onUpdateService saves unchecked checkboxes,
it deletes their value from settings, which also results in undefined.
This patch changes that code such that a newValue of undefined does indeed
delete the value of the setting, but a falsy newValue is still written to
the settings.
The code in
_initServices()usesundefinedas expected -- to indicate that a field doesn't exist. OTOH, whenonUpdateServicesaves unchecked checkboxes, it deletes their value from settings, which also results inundefined.This patch changes that code such that a
newValueofundefineddoes indeed delete the value of the setting, but a falsynewValueis still written to the settings.