updated for version 7.4.637

Problem:    Incorrectly read the number of buffer for which an autocommand
            should be registered.
Solution:   Reverse check for "<buffer=abuf>". (Lech Lorens)

src/version.c

@@ -741,6 +741,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    637,
 /**/
     636,
 /**/