patch 9.0.0129: compiler warning for int/size_t usage

Problem:    Compiler warning for int/size_t usage.
Solution:   Add a type cast. (Mike Williams, closes #10830)
diff --git a/src/version.c b/src/version.c
index f079d3c..f4c63f1 100644
--- a/src/version.c
+++ b/src/version.c
@@ -736,6 +736,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    129,
+/**/
     128,
 /**/
     127,