updated for version 7.4.226

Problem:    Cursurline highlighting not redrawn when scrolling. (John
            Marriott)
Solution:   Check for required redraw in two places.

src/version.c

@@ -734,6 +734,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    226,
 /**/
     225,
 /**/