dovecot-1.2: acl: Don't assert-crash if removing all rights.

[dovecot at dovecot.org]

details:   http://hg.dovecot.org/dovecot-1.2/rev/01fae3737994
changeset: 9127:01fae3737994
user:      Timo Sirainen <tss at iki.fi>
date:      Mon Jun 15 19:38:30 2009 -0400
description:
acl: Don't assert-crash if removing all rights.

diffstat:

1 file changed, 2 insertions(+), 1 deletion(-)
src/plugins/acl/acl-backend-vfile.c |    3 ++-

diffs (13 lines):

diff -r b745911012bb -r 01fae3737994 src/plugins/acl/acl-backend-vfile.c
--- a/src/plugins/acl/acl-backend-vfile.c	Mon Jun 15 00:01:39 2009 -0400
+++ b/src/plugins/acl/acl-backend-vfile.c	Mon Jun 15 19:38:30 2009 -0400
@@ -900,7 +900,8 @@ static bool modify_right_list(pool_t poo
 				array_append(&rights, &old_rights[i], 1);
 		}
 		new_rights = &null;
-		modify_rights = array_idx(&rights, 0);
+		modify_rights = array_count(&rights) == 0 ? NULL :
+			array_idx(&rights, 0);
 		acl_rights_merge(pool, &new_rights, modify_rights, TRUE);
 		break;
 	case ACL_MODIFY_MODE_ADD: