patch 9.0.1293: the set_num_option() is too long

Problem:    The set_num_option() is too long.
Solution:   Move code to separate functions. (Yegappan Lakshmanan,
            closes #11954)

src/version.c

@@ -695,6 +695,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    1293,
 /**/
     1292,
 /**/