add missing send_confirm_select method

Added the missing `send_confirm_select` method.

fixes: #43

Author: tanmaykm

src/protocol.jl

@@ -938,10 +938,12 @@ end
 
 function confirm_select(chan::MessageChannel; nowait::Bool=false, timeout::Int=DEFAULT_TIMEOUT)
     _wait_resp(chan, true, nowait, on_confirm_select_ok, :Confirm, :SelectOk, false, timeout) do
-        send_confirm_select(chan, nowait)
+        send_confirm_select(chan)
     end
 end
 
+send_confirm_select(chan::MessageChannel) = send(chan, TAMQPMethodPayload(:Confirm, :Select, ()))
+
 # ----------------------------------------
 # Confirm end
 # ----------------------------------------