thread_pthread.c: timer thread flag

* thread_pthread.c (timer_thread): add a flag to tell timer thread
  is created, since 0 may be a valid value as pthread_t.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@46405 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 1 insertions, 1 deletions

diff --git a/thread.c b/thread.c
index 2d64e5384c..8a84561b65 100644
--- a/thread.c
+++ b/thread.c
@@ -3725,7 +3725,7 @@ timer_thread_function(void *arg)
 void
 rb_thread_stop_timer_thread(int close_anyway)
 {
-    if (timer_thread_id && native_stop_timer_thread(close_anyway)) {
+    if (TIMER_THREAD_CREATED_P() && native_stop_timer_thread(close_anyway)) {
 	native_reset_timer_thread();
     }
 }