updated for version 7.4.493

Problem:    A TextChanged autocommand is triggered when saving a file.
            (William Gardner)
Solution:   Update last_changedtick after calling unchanged(). (Christian
            Brabandt)

src/version.c

@@ -741,6 +741,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    493,
 /**/
     492,
 /**/