patch 8.2.0468: GUI: pixel dust with some fonts and characters

Problem:    GUI: pixel dust with some fonts and characters.
Solution:   Always redraw the character before the cursor. (Nir Lichtman,
            closes #5549, closes #5856)

src/version.c

@@ -738,6 +738,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    468,
 /**/
     467,
 /**/