patch 8.0.0619: GUI gets stuck if timer uses feedkeys()

Problem:    In the GUI, when a timer uses feedkeys(), it still waits for an
            event. (Raymond Ko)
Solution:   Check tb_change_cnt in one more place.

src/version.c

@@ -764,6 +764,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    619,
 /**/
     618,
 /**/