MB-49523 [BP] Fix incorrect matching in goport

This is a backport of MB-49370.

Change-Id: I654d1c6f88ef96d55af125ec086928a0759a1478
Reviewed-on: https://review.couchbase.org/c/ns_server/+/172292
Well-Formed: Restriction Checker
Reviewed-by: Timofey Barmin <[email protected]>
Tested-by: Steve Watanabe <[email protected]>

Author: stevewatanabe

src/goport.erl

@@ -492,7 +492,7 @@ flush_invalid_data(#state{ctx = Ctx} = State) ->
 
             %% pretend it's the regular port output; that way, we'll even try
             %% to break it into lines if requested
-            NewState1 = handle_port_output(stdout, Data, NewState),
+            {ok, NewState1} = handle_port_output(stdout, Data, NewState),
             flush_packet_context(stdout, NewState1);
         false ->
             State