updated for version 7.4.158

Problem:    Pattern containing \zs is not handled correctly by substitute().
Solution:   Change how an empty match is skipped. (Yukihiro Nakadaira)

src/version.c

@@ -738,6 +738,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    158,
 /**/
     157,
 /**/