patch 7.4.1452

Problem:    When a callback adds a syntax item either the redraw doesn't
            happen right away or in the GUI the cursor is in the wrong
            position for a moment. (Jakson Alves de Aquino)
Solution:   Redraw after the callback was invoked.

src/version.c

@@ -743,6 +743,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    1452,
 /**/
     1451,
 /**/