patch 8.0.1109: timer causes error on exit from Ex mode

Problem:    Timer causes error on exit from Ex mode. (xtal8)
Solution:   save and restore the ex_pressedreturn flag. (Christian Brabandt,
            closes #2079)

src/version.c

@@ -769,6 +769,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    1109,
 /**/
     1108,
 /**/