patch 8.2.2826: compiler warnings for int to size_t conversion

Problem:    Compiler warnings for int to size_t conversion. (Randall W.
            Morris)
Solution:   Add type casts.
diff --git a/src/version.c b/src/version.c
index a72cd3c..82875de 100644
--- a/src/version.c
+++ b/src/version.c
@@ -751,6 +751,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    2826,
+/**/
     2825,
 /**/
     2824,