guards (unnecessary, but why not)

Author: boazsegev

fio-stl.h

@@ -17538,6 +17538,8 @@ FIO_IFUNC fio___timer_event_s *fio___timer_event_new(
 
 FIO_IFUNC void fio___timer_event_free(fio_timer_queue_s *tq,
                                       fio___timer_event_s *t) {
+  if (!t)
+    return;
   if (tq && (t->repetitions < 0 || fio_atomic_sub_fetch(&t->repetitions, 1))) {
     FIO___LOCK_LOCK(tq->lock);
     fio___timer_insert(&tq->next, t);
@@ -17614,15 +17616,16 @@ SFUNC void fio_timer_schedule FIO_NOOP(fio_timer_queue_s *timer,
  * they repeat).
  */
 SFUNC void fio_timer_destroy(fio_timer_queue_s *tq) {
-  fio___timer_event_s *next;
+  if (!tq)
+    return;
+  fio___timer_event_s *next = NULL;
   FIO___LOCK_LOCK(tq->lock);
   next = tq->next;
   tq->next = NULL;
   FIO___LOCK_UNLOCK(tq->lock);
   FIO___LOCK_DESTROY(tq->lock);
   while (next) {
     fio___timer_event_s *tmp = next;
-
     next = next->next;
     fio___timer_event_free(NULL, tmp);
   }

fio-stl/102 queue.h

@@ -663,6 +663,8 @@ FIO_IFUNC fio___timer_event_s *fio___timer_event_new(
 
 FIO_IFUNC void fio___timer_event_free(fio_timer_queue_s *tq,
                                       fio___timer_event_s *t) {
+  if (!t)
+    return;
   if (tq && (t->repetitions < 0 || fio_atomic_sub_fetch(&t->repetitions, 1))) {
     FIO___LOCK_LOCK(tq->lock);
     fio___timer_insert(&tq->next, t);
@@ -739,15 +741,16 @@ SFUNC void fio_timer_schedule FIO_NOOP(fio_timer_queue_s *timer,
  * they repeat).
  */
 SFUNC void fio_timer_destroy(fio_timer_queue_s *tq) {
-  fio___timer_event_s *next;
+  if (!tq)
+    return;
+  fio___timer_event_s *next = NULL;
   FIO___LOCK_LOCK(tq->lock);
   next = tq->next;
   tq->next = NULL;
   FIO___LOCK_UNLOCK(tq->lock);
   FIO___LOCK_DESTROY(tq->lock);
   while (next) {
     fio___timer_event_s *tmp = next;
-
     next = next->next;
     fio___timer_event_free(NULL, tmp);
   }