patch 8.2.3228: cannot use a simple block for the :command argument

Problem:    Cannot use a simple block for the :command argument. (Maarten
            Tournoij)
Solution:   Recognize a simple {} block. (issue #8623)

src/version.c

@@ -755,6 +755,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    3228,
 /**/
     3227,
 /**/