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OTP-8619 In R13B04 sys:get_status was modified to invoke format_status/2
in the callback module if the module exports that function.
This resulted in a change to the term returned from calling
sys:get_status on the supervisor module, since supervisor
is a gen_server and gen_server exports format_status. The
sasl release_handler_1 module had a dependency on the pre-R13B04
term returned by sys:get_status when invoked on a supervisor,
so the R13B04 change broke that dependency. This problem
has been fixed by change release_handler_1 to handle both
the pre-R13B04 and R13B04 terms that sys:get_status can
return from a supervisor.
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