updated for version 7.4.157
Problem:    Error number used twice. (Yukihiro Nakadaira)
Solution:   Change the one not referred in the docs.
diff --git a/src/version.c b/src/version.c
index f916026..b80bacd 100644
--- a/src/version.c
+++ b/src/version.c
@@ -739,6 +739,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    157,
+/**/
     156,
 /**/
     155,