getStats() causes memory leaks against a 2.0 beta Couchbase server

The getStats functionality (both OO and regular function) causes memory leak errors to be displayed when operating against a 2.0 beta server.

[Mon Oct 1 18:09:46 2012] Script: '/home/orion/couchbase/php-ext-couchbase/tests/new/phpt/ServerStats/Stats.php'
/home/orion/couchbase/php-ext-couchbase/couchbase.c(1310) : Freeing 0x094A5068 (20 bytes), script=/home/orion/couchbase/php-ext-couchbase/tests/new/phpt/ServerStats/Stats.php
Last leak repeated 2 times
[Mon Oct 1 18:09:46 2012] Script: '/home/orion/couchbase/php-ext-couchbase/tests/new/phpt/ServerStats/Stats.php'
/home/orion/couchbase/php-ext-couchbase/couchbase.c(1311) : Freeing 0x094A5154 (10 bytes), script=/home/orion/couchbase/php-ext-couchbase/tests/new/phpt/ServerStats/Stats.php
Last leak repeated 2 times
=== Total 6 memory leaks detected ===

(Memory locations and paths would, of course, vary from the above.)

The couchbase.c lines being referenced are:

1310 MAKE_STD_ZVAL(val);
1311 ZVAL_STRINGL(val, (char *)bytes, nbytes, 1);

within php_couchbase_stat_callback.

This only seems to occur when operating against a 2.0 beta Couchbase server. It does not occur when operating against a 1.8 server. In discussion in #libcouchbase, it was mentioned that this might be due to something like the server returning a zero-length data value (in the bytes variable, which is from resp->v.v0.bytes of lcb_server_stat_resp_t* resp).

Setting sev to minor at a guess, since the total memory leak here is on the order of 100 bytes for a few hundred stats values retrieved. I can't see that this would be severe unless a user was calling getStats() a huge number of times in a single script invocation; so it's probably mostly an annoyance.