5045 use atomic_{inc,dec}_* instead of atomic_add_*

*** 1383,1390 ****
                      (uint32_t)ae->ae_specific);
          } else {
                  FCOEI_LOG(__FUNCTION__, "ss %p not bound now", ss);
          }
  
!         atomic_add_32(&ss->ss_port_event_counter, -1);
          kmem_free(ae, sizeof (fcoei_event_t));
  }
--- 1383,1390 ----
                      (uint32_t)ae->ae_specific);
          } else {
                  FCOEI_LOG(__FUNCTION__, "ss %p not bound now", ss);
          }
  
!         atomic_dec_32(&ss->ss_port_event_counter);
          kmem_free(ae, sizeof (fcoei_event_t));
  }