ASACORE-1295 Fixed memory leak

Fixed memory leak that occured if ReadAll function was
called for an announcement and the property store
was empty.

Change-Id: I97495acf6d9e000494396c980094c6c180f82791
Signed-off-by: George Nash <georgen@qce.qualcomm.com>
Merge "ASACORE-1295 Fixed memory leak" into RB14.12