Initialization (et al) method return values

[lea255ace]

Many methods have an int or bool return type, but never vary the return value and are not checked in the calling code.

transport_manager_impl.cc:

int TransportManagerImpl::Init() {                                               
  LOG4CXX_TRACE(logger_, "enter");                                               
  all_thread_active_ = true;                                                     
  is_initialized_ = true;                                                        
  LOG4CXX_TRACE(logger_, "exit with E_SUCCESS");                                 
  return E_SUCCESS;                                                              
}

Call from life_cycle.cc:

transport_manager_->Init();

Either return values should be checked or functions should have return type of void.