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 9769fe6eb3b8c09c365301870e555e08c30d8727)
1 file changed