updated for version 7.2.423

Problem:    Crash when assigning s: to variable. (Yukihiro Nakadaira)
Solution:   Make ga_scripts contain pointer to scriptvar_T instead of
            scriptvar_T itself. (Dominique Pelle)

src/version.c

@@ -681,6 +681,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    423,
 /**/
     422,
 /**/