liboboe: initialize mHasThread

HelloOboe was failing when OboeStream_createThread() was first called.
The uninitialized variable caused it to think it already had a thread.

Test: HelloOboe demo app
Change-Id: I91358999a56903d239c45824cacc520e69691c18
Signed-off-by: Phil Burk <philburk@google.com>
1 file changed