Haproxy emits an incorrect warning

[hawkeye-7]

Haproxy is emitting a warning: "The $bind_options parameter is deprecated; please use $bind instead"

This occurs even when bind_options is NOT being used.

Suggest changing the code in listen.pp and frontend.pp where it says:
if $bind_options != '' {
warning('The $bind_options parameter is deprecated; please use $bind instead')
}

to
if $bind_options {
warning('The $bind_options parameter is deprecated; please use $bind instead')
}