patch 8.2.3297: cannot use all commands inside a {} block

Problem:    Cannot use all commands inside a {} block after :command and
            :autocmd.
Solution:   Do consider \n to separate commands. (closes #8620)
diff --git a/src/vim9compile.c b/src/vim9compile.c
index d2a6f68..d96724b 100644
--- a/src/vim9compile.c
+++ b/src/vim9compile.c
@@ -5691,7 +5691,7 @@
 	name_end = skip_regexp(name_start + 1, '/', TRUE);
 	if (*name_end == '/')
 	    ++name_end;
-	eap->nextcmd = check_nextcmd(name_end);
+	set_nextcmd(eap, name_end);
     }
     if (name_end == name_start || *skipwhite(name_end) != '(')
     {