message: Free aio before server start.
diff: #include "server.h"
  #include "http.h"
  #include "connection.h"
  +#include "async.h"
  static int swServer_start_check(swServer *serv);
  static void swServer_signal_handler(int sig);
  @@ -270,7 +271,6 @@ static int swServer_start_check(swServer *serv)
  ls->protocol.package_max_length = SW_BUFFER_MIN_SIZE;
  }
  }
  -
  #ifdef SW_USE_OPENSSL
  /**
  * OpenSSL thread-safe
  @@ -280,6 +280,8 @@ static int swServer_start_check(swServer *serv)
  swSSL_init_thread_safety();
  }
  #endif
  + // check aio threads
  + swAio_free();
  return SW_OK;
  }
  