patch 8.0.0246: compiler warnings for int to pointer conversion

Problem:    Compiler warnings for int to pointer conversion.
Solution:   Fix macro for mch_memmove(). (John Marriott)
diff --git a/src/version.c b/src/version.c
index a2ebcf5..d3c25e6 100644
--- a/src/version.c
+++ b/src/version.c
@@ -765,6 +765,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    246,
+/**/
     245,
 /**/
     244,