fix build error on bsd

git-svn-id: http://svn.freeswitch.org/svn/freeswitch/trunk@11886 d0543943-73ff-0310-b7d9-9358b9ac24b2

libs/sofia-sip/libsofia-sip-ua/su/su_port.h

@@ -420,9 +420,10 @@ su_timer_queue_t *su_port_deferrable(su_port_t *self)
 {
   su_virtual_port_t *base = (su_virtual_port_t *)self;
 
-  if (base == NULL)
-    return (intptr_t)(errno = EFAULT), NULL;
-
+  if (base == NULL) {
+	  errno = EFAULT;
+	  return NULL;
+  }
   return base->sup_vtable->su_port_deferrable(self);
 }