Removed unnecessary pipeline size from con state

Tracking size in http connection process state
was unnecessary as it wasn't queried for logic
or obvious reporting and ets table should have
right (within 1) value already.

src/ibrowse_http_client.erl

@@ -53,7 +53,7 @@
                 deleted_crlf = false, transfer_encoding,
                 chunk_size, chunk_size_buffer = <<>>,
                 recvd_chunk_size, interim_reply_sent = false,
-                lb_ets_tid, cur_pipeline_size = 0, prev_req_id
+                lb_ets_tid, prev_req_id
                }).
 
 -record(request, {url, method, options, from,
@@ -1938,18 +1938,16 @@ to_lower([], Acc) ->
 
 shutting_down(#state{lb_ets_tid = undefined}) ->
     ok;
-shutting_down(#state{lb_ets_tid = Tid,
-                     cur_pipeline_size = _Sz}) ->
+shutting_down(#state{lb_ets_tid = Tid}) ->
     catch ets:delete(Tid, self()).
 
 inc_pipeline_counter(#state{is_closing = true} = State) ->
     State;
 inc_pipeline_counter(#state{lb_ets_tid = undefined} = State) ->
     State;
-inc_pipeline_counter(#state{cur_pipeline_size = Pipe_sz,
-                           lb_ets_tid = Tid} = State) ->
+inc_pipeline_counter(#state{lb_ets_tid = Tid} = State) ->
     update_counter(Tid, self(), {2,1,99999,9999}),
-    State#state{cur_pipeline_size = Pipe_sz + 1}.
+    State.
 
 update_counter(Tid, Key, Args) ->
     ets:update_counter(Tid, Key, Args).
@@ -1958,8 +1956,7 @@ dec_pipeline_counter(#state{is_closing = true} = State) ->
     State;
 dec_pipeline_counter(#state{lb_ets_tid = undefined} = State) ->
     State;
-dec_pipeline_counter(#state{cur_pipeline_size = Pipe_sz,
-                            lb_ets_tid = Tid} = State) ->
+dec_pipeline_counter(#state{lb_ets_tid = Tid} = State) ->
     _ = try
 	    update_counter(Tid, self(), {2,-1,0,0}),
 	    update_counter(Tid, self(), {3,-1,0,0})
@@ -1967,7 +1964,7 @@ dec_pipeline_counter(#state{cur_pipeline_size = Pipe_sz,
 	    _:_ ->
 		ok
 	end,
-    State#state{cur_pipeline_size = Pipe_sz - 1}.
+    State.
 
 flatten([H | _] = L) when is_integer(H) ->
     L;