patch 8.0.0654: no warning for text after :endfunction

Problem:    Text found after :endfunction is silently ignored.
Solution:   Give a warning if 'verbose' is set.  When | or \n are used,
            execute the text as a command.

src/version.c

@@ -764,6 +764,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    654,
 /**/
     653,
 /**/