Fix derpy case clause with whereis

src/lager.erl

@@ -93,9 +93,9 @@ dispatch_log(Sink, Severity, Metadata, Format, Args, Size) when is_atom(Severity
     case {whereis(Sink), lager_config:get({Sink, loglevel}, {?LOG_NONE, []})} of
         {undefined, _} ->
             case whereis(lager_event) of
-                false ->
+                undefined ->
                     {error, lager_not_running};
-                true ->
+                _Pid ->
                     {error, {sink_not_configured, Sink}}
             end;
         {SinkPid, {Level, Traces}} when (Level band SeverityAsInt) /= 0 orelse Traces /= [] ->

src/lager_transform.erl

@@ -173,7 +173,7 @@ do_transform(Line, SinkName, Severity, Arguments0) ->
     {'case', Line,
      {tuple, Line,
       [{call, Line, {atom, Line, whereis}, [{atom, Line, SinkName}]},
-       {call, Line, {remote, Line, {atom, Line, lager_config}, {atom, Line, get}}, [{atom, Line, SinkName}, {atom, Line, loglevel}, {tuple, Line, [{integer, Line, 0},{nil, Line}]}]}]},
+       {call, Line, {remote, Line, {atom, Line, lager_config}, {atom, Line, get}}, [{tuple, Line, [{atom, Line, SinkName}, {atom, Line, loglevel}]}, {tuple, Line, [{integer, Line, 0},{nil, Line}]}]}]},
      [
       %% {undefined, _} -> {error, lager_not_running}
       {clause, Line,