bug#35579: Add example of setting view-exit-action to a "function with one argument"

[積丹尼 Dan Jacobson]

>>>>> "mr" == martin rudalics <rudalics@gmx.at> writes:
mr> To me this example is confusing since the BUFFER argument is nowhere
mr> used within the lambda.

That's what I'm saying: without a proper example users will only dig up
wrong examples from the net/web.