patch 8.2.3779: using freed memory when defining a user command recursively

Problem:    Using freed memory when defining a user command from a user
            command.
Solution:   Do not use the command pointer after executing the command.
            (closes #9318)

src/version.c

@@ -753,6 +753,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    3779,
 /**/
     3778,
 /**/