Fix proxy.process.http.current_client_connections

Author: shinrich

proxy/http/Http1ClientSession.cc

@@ -261,8 +261,8 @@ Http1ClientSession::do_io_close(int alerrno)
   } else {
     HttpSsnDebug("[%" PRId64 "] session closed", con_id);
     HTTP_SUM_DYN_STAT(http_transactions_per_client_con, transact_count);
-    if (read_state != HCS_ACTIVE_READER) {
-      // donot double decrement
+    if (conn_decrease) {
+      // do not double decrement
       HTTP_DECREMENT_DYN_STAT(http_current_client_connections_stat);
     }
     read_state    = HCS_CLOSED;