patch 8.2.5067: timer_create is not available on every Mac system

Problem:    Timer_create is not available on every Mac system. (Hisashi T
            Fujinaka)
Solution:   Adjust #ifdef.
diff --git a/src/version.c b/src/version.c
index 34266c1..aa916b9 100644
--- a/src/version.c
+++ b/src/version.c
@@ -735,6 +735,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    5067,
+/**/
     5066,
 /**/
     5065,