patch 8.1.1383: warning for size_t/int mixup

Problem:    Warning for size_t/int mixup.
Solution:   Change type. (Mike Williams)
diff --git a/src/version.c b/src/version.c
index b5cee8e..b774f3d 100644
--- a/src/version.c
+++ b/src/version.c
@@ -768,6 +768,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1383,
+/**/
     1382,
 /**/
     1381,