patch 8.1.0749: error message contains garbage

Problem:    Error message contains garbage. (Dominique Pelle)
Solution:   Use correct pointer to failed expression.
diff --git a/src/version.c b/src/version.c
index e01d1c7..c0a91d3 100644
--- a/src/version.c
+++ b/src/version.c
@@ -796,6 +796,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    749,
+/**/
     748,
 /**/
     747,