rabbit_prelaunch_sighandler: Comment out code which is unused

As it is ready to handle the stop of RabbitMQ and has been tested, we
can keep the code around just in case.

However, this causes a Dialyzer error which must be fixed, so let's
comment it out.

[#171234776]

1 files changed, 8 insertions, 5 deletions

diff --git a/apps/rabbitmq_prelaunch/src/rabbit_prelaunch_sighandler.erl b/apps/rabbitmq_prelaunch/src/rabbit_prelaunch_sighandler.erl
index 12716a31fb..f9a60effda 100644
--- a/apps/rabbitmq_prelaunch/src/rabbit_prelaunch_sighandler.erl
+++ b/apps/rabbitmq_prelaunch/src/rabbit_prelaunch_sighandler.erl
@@ -65,11 +65,14 @@ handle_event(Signal, State) when ?SIGNAL_HANDLED_BY_ERLANG(Signal) ->
     {ok, State};
 handle_event(Signal, State) ->
     case ?SIGNALS_HANDLED_BY_US of
-        #{Signal := stop} ->
-            error_logger:info_msg(
-              "~s received - shutting down~n",
-              [string:uppercase(atom_to_list(Signal))]),
-            ok = init:stop();
+        %% The code below can be uncommented if we introduce a signal
+        %% which should stop RabbitMQ.
+        %
+        %#{Signal := stop} ->
+        %    error_logger:info_msg(
+        %      "~s received - shutting down~n",
+        %      [string:uppercase(atom_to_list(Signal))]),
+        %    ok = init:stop();
         _ ->
             error_logger:info_msg(
               "~s received - unhandled signal~n",