patch 7.4.702

Problem:    Joining an empty list does uneccessary work.
Solution:   Let join() return early. (Marco Hinz)

src/version.c

@@ -741,6 +741,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    702,
 /**/
     701,
 /**/