patch 9.0.1380: CTRL-X on 2**64 subtracts two

Problem:    CTRL-X on 2**64 subtracts two. (James McCoy)
Solution:   Correct computation for large number. (closes #12103)
diff --git a/src/version.c b/src/version.c
index 3f40fd1..fbe5346 100644
--- a/src/version.c
+++ b/src/version.c
@@ -696,6 +696,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1380,
+/**/
     1379,
 /**/
     1378,