patch 8.2.1148: warning for using int instead of size_t

Problem:    Warning for using int instead of size_t.
Solution:   Change "len" argument to size_t. (Mike Williams)
diff --git a/src/version.c b/src/version.c
index ec1e12e..867eaf5 100644
--- a/src/version.c
+++ b/src/version.c
@@ -755,6 +755,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1148,
+/**/
     1147,
 /**/
     1146,