message: Fix compilation with logging disabled
diff: @@ -366,6 +366,14 @@ bool operator==(const logger::field& x, const logger::field& y);
  #define CAF_LOG_COMPONENT "caf"
  #endif // CAF_LOG_COMPONENT
  +#define CAF_LOG_MAKE_EVENT(aid, component, loglvl, message) \
  + ::caf::logger::event { \
  + loglvl, component, CAF_PRETTY_FUN, __func__, \
  + caf::logger::skip_path(__FILE__), __LINE__, \
  + (::caf::logger::line_builder{} << message).get(), \
  + ::std::this_thread::get_id(), aid, ::caf::make_timestamp() \
  + }
  +
  #if CAF_LOG_LEVEL == -1
  #define CAF_LOG_IMPL(unused1, unused2, unused3)
  @@ -385,14 +393,6 @@ inline caf::actor_id caf_set_aid_dummy() { return 0; }
  #else // CAF_LOG_LEVEL
  -#define CAF_LOG_MAKE_EVENT(aid, component, loglvl, message) \
  - ::caf::logger::event { \
  - loglvl, component, CAF_PRETTY_FUN, __func__, \
  - caf::logger::skip_path(__FILE__), __LINE__, \
  - (::caf::logger::line_builder{} << message).get(), \
  - ::std::this_thread::get_id(), aid, ::caf::make_timestamp() \
  - }
  -
  #define CAF_LOG_IMPL(component, loglvl, message) \
  do { \
  auto CAF_UNIFYN(caf_logger) = caf::logger::current_logger(); \
  