lib-storage: fail_mailbox_exists() - Return not found as a success instead of an...

GETMETADATA sometimes responds with “NO [SERVERBUG] BUG: Unknown internal error returned”,
instead of “NO Mailbox doesn't exist”, depending on the actual configuration.
This can happen with the shared namespace.

diff --git a/src/lib-storage/fail-mailbox.c b/src/lib-storage/fail-mailbox.c
index 7925c9369279da52e36551ff467ef6873c460011..07ace29231b00760a0cdd68b77dd3b58825874a2 100644 (file)
--- a/src/lib-storage/fail-mailbox.c
+++ b/src/lib-storage/fail-mailbox.c
@@ -26,7 +26,7 @@ static int fail_mailbox_exists(struct mailbox *box ATTR_UNUSED,
                               enum mailbox_existence *existence_r)
 {
        *existence_r = MAILBOX_EXISTENCE_NONE;
-       return -1;
+       return 0;
 }
 
 static int fail_mailbox_open(struct mailbox *box)