Apply memory leak in zoo_multi API patch

[yuui]

refs Issue #61.

https://issues.apache.org/jira/browse/ZOOKEEPER-1562

[eric]

Do you see anywhere in the ruby library that is actually using the zoo_multi call?

I see in ext/zkrb_wrapper.c that we're wrapping the methods, but it doesn't appear that we're actually calling any of them.

[yuui]

Sorry. I grep all across the gem source files, and I see the zoo_multi is not called anywhere as you say.

[slyphon]

yeah, i'd converted it a while back to do zoo_single (or w/e) for single-threaded usage, as ruby gets REALLY ANGRY when you have alien POSIX threads call into the the interpreter :)

[yuui]

Thank you, @slyphon. I could understand why zoo_multi isn't used for this gem :)