Don't check for null pointer in calls to free

According to the C99 specification section 7.20.3.2 paragraph 2:

> If ptr is a null pointer, no action occurs.

So we do not need to check that the pointer is a null pointer.

1 files changed, 1 insertions, 1 deletions

diff --git a/thread.c b/thread.c
index 5dc0c269f2..b48b1ac9cb 100644
--- a/thread.c
+++ b/thread.c
@@ -3911,7 +3911,7 @@ rb_fd_init_copy(rb_fdset_t *dst, rb_fdset_t *src)
 void
 rb_fd_term(rb_fdset_t *fds)
 {
-    if (fds->fdset) xfree(fds->fdset);
+    xfree(fds->fdset);
     fds->maxfd = 0;
     fds->fdset = 0;
 }