patch 9.0.1389: Amiga: a couple of include files are included twice

Problem:    Amiga: a couple of include files are included twice.
Solution:   Remove duplicate includes. (Ola Söder, closes #12106)
diff --git a/src/version.c b/src/version.c
index 0a05883..2a50694 100644
--- a/src/version.c
+++ b/src/version.c
@@ -696,6 +696,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1389,
+/**/
     1388,
 /**/
     1387,