Initialize all fields of struct iocb.

Kernel does not accept non-zero value of iocb->aio_reserved2.

Bug: 132803232
Test: initialize malloc() memory to non-zero pattern and see what breaks

Change-Id: I65a7e89e3a2c1ba79df1dc2d011d6c76c41afb81
(cherry picked from commit fe7eca7b8fba6770ad36cadb4d89c87385f17451)
1 file changed