patch 8.1.1238: MS-Windows: compiler warning for sprintf() format

Problem:    MS-Windows: compiler warning for sprintf() format.
Solution:   Change %d to %ld. (Ken Takata)
diff --git a/src/version.c b/src/version.c
index 32fab93..f8a66a0 100644
--- a/src/version.c
+++ b/src/version.c
@@ -768,6 +768,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1238,
+/**/
     1237,
 /**/
     1236,