patch 8.2.4233: crash when recording and using Select mode

Problem:    Crash when recording and using Select mode.
Solution:   When deleting the last recorded character check there is something
            to delete.

src/version.c

@@ -750,6 +750,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    4233,
 /**/
     4232,
 /**/