updated for version 7.4.021
Problem:    NFA regexp: Using \ze in one branch which doesn't match may cause
            end of another branch to be wrong. (William Fugh)
Solution:   Set end position if it wasn't set yet.
diff --git a/src/version.c b/src/version.c
index 99c9d22..06bcaa3 100644
--- a/src/version.c
+++ b/src/version.c
@@ -739,6 +739,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    21,
+/**/
     20,
 /**/
     19,