patch 8.0.0618: NFA regex engine handles [0-z] incorrectly

Problem:    NFA regex engine handles [0-z] incorrectly.
Solution:   Return at the right point. (James McCoy, closes #1703)
diff --git a/src/version.c b/src/version.c
index 4fddbb9..fa8b538 100644
--- a/src/version.c
+++ b/src/version.c
@@ -765,6 +765,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    618,
+/**/
     617,
 /**/
     616,