patch 8.0.1584: using C99 in Mac file gives compiler warning messages

Problem:    Using C99 in Mac file gives compiler warning messages.
Solution:   Add #prama's to avoid the warnings. (Kazunobu Kuriyama)
diff --git a/src/version.c b/src/version.c
index 40b161a..a2165f2 100644
--- a/src/version.c
+++ b/src/version.c
@@ -767,6 +767,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1584,
+/**/
     1583,
 /**/
     1582,