Fix respond_to? check for 'declare_workers_not_supported!'

Author: andrewvc

lib/logstash/outputs/tcp.rb

@@ -22,7 +22,7 @@ class LogStash::Outputs::Tcp < LogStash::Outputs::Base
   # When mode is `server`, the port to listen on.
   # When mode is `client`, the port to connect to.
   config :port, :validate => :number, :required => true
-  
+
   # When connect failed,retry interval in sec.
   config :reconnect_interval, :validate => :number, :default => 10
 
@@ -39,7 +39,7 @@ class LogStash::Outputs::Tcp < LogStash::Outputs::Base
   config :message_format, :validate => :string, :deprecated => true
 
   # respond_to? check needed for backwards compatibility with < 2.2 Logstashes
-  declare_workers_not_supported! if self.respond_to?(:workers_not_supported!)
+  declare_workers_not_supported! if self.respond_to?(:declare_workers_not_supported!)
 
   class Client
     public
@@ -136,14 +136,14 @@ def server?
 
   public
   def receive(event)
-    
+
 
     #if @message_format
       #output = event.sprintf(@message_format) + "\n"
     #else
       #output = event.to_hash.to_json + "\n"
     #end
-    
+
     @codec.encode(event)
   end # def receive
 end # class LogStash::Outputs::Tcp