Some codes replace to `RBOOL` macro (#5023)

* Some code replace and using RBOOL macro

* Fix indent

* Using RBOOL in syserr_eqq function

1 files changed, 1 insertions, 6 deletions

diff --git a/thread.c b/thread.c
index 251dc1b345..36723c6fc0 100644
--- a/thread.c
+++ b/thread.c
@@ -3326,12 +3326,7 @@ rb_thread_status(VALUE thread)
 static VALUE
 rb_thread_alive_p(VALUE thread)
 {
-    if (thread_finished(rb_thread_ptr(thread))) {
-        return Qfalse;
-    }
-    else {
-        return Qtrue;
-    }
+    return RBOOL(!thread_finished(rb_thread_ptr(thread)));
 }
 
 /*