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

*** 402,412 ****
  #define SCTP_SLC_REPORT_INTERVAL        (30 * MINUTES)
  
  #define SCTP_DECR_LISTEN_CNT(sctp)                                      \
  {                                                                       \
          ASSERT((sctp)->sctp_listen_cnt->slc_cnt > 0);                   \
!         if (atomic_add_32_nv(&(sctp)->sctp_listen_cnt->slc_cnt, -1) == 0) \
                  kmem_free((sctp)->sctp_listen_cnt, sizeof (sctp_listen_cnt_t));\
          (sctp)->sctp_listen_cnt = NULL;                                 \
  }
  
  /* Increment and decrement the number of associations in sctp_stack_t. */
--- 402,412 ----
  #define SCTP_SLC_REPORT_INTERVAL        (30 * MINUTES)
  
  #define SCTP_DECR_LISTEN_CNT(sctp)                                      \
  {                                                                       \
          ASSERT((sctp)->sctp_listen_cnt->slc_cnt > 0);                   \
!         if (atomic_dec_32_nv(&(sctp)->sctp_listen_cnt->slc_cnt) == 0) \
                  kmem_free((sctp)->sctp_listen_cnt, sizeof (sctp_listen_cnt_t));\
          (sctp)->sctp_listen_cnt = NULL;                                 \
  }
  
  /* Increment and decrement the number of associations in sctp_stack_t. */