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

@@ -62,11 +62,11 @@
 void
 rdsv3_inc_addref(struct rdsv3_incoming *inc)
 {
         RDSV3_DPRINTF4("rdsv3_inc_addref",
             "addref inc %p ref %d", inc, atomic_get(&inc->i_refcount));
-        atomic_add_32(&inc->i_refcount, 1);
+        atomic_inc_32(&inc->i_refcount);
 }
 
 void
 rdsv3_inc_put(struct rdsv3_incoming *inc)
 {