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

*** 147,157 ****
  };
  
  #define CLONE2STATS(clone_xprt) \
          ((struct cots_master_data *)(clone_xprt)->xp_master->xp_p2)->cmd_stats
  #define RSSTAT_INCR(s, x)       \
!         atomic_add_64(&(s)->x.value.ui64, 1)
  
  /*
   * Pointer to a transport specific `ready to receive' function in rpcmod
   * (set from rpcmod).
   */
--- 147,157 ----
  };
  
  #define CLONE2STATS(clone_xprt) \
          ((struct cots_master_data *)(clone_xprt)->xp_master->xp_p2)->cmd_stats
  #define RSSTAT_INCR(s, x)       \
!         atomic_inc_64(&(s)->x.value.ui64)
  
  /*
   * Pointer to a transport specific `ready to receive' function in rpcmod
   * (set from rpcmod).
   */