updated for version 7.3.493
Problem:    Two unused variables.
Solution:   Remove them. (Hong Xu)
diff --git a/src/version.c b/src/version.c
index 25cbb18..e5102e5 100644
--- a/src/version.c
+++ b/src/version.c
@@ -715,6 +715,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    493,
+/**/
     492,
 /**/
     491,