coverity#1242370: Unchecked return value

Change-Id: I11d80ddea4a38ce69ad7076af6da0bf173bd8551
coverity#1242369: Unchecked return value

Change-Id: Ib5a938d9a8a0ac1f2f5dfb299c948951bb845349
coverity#1242368: Unchecked return value

Change-Id: I6aaad60cf08349aee6c07621764a1a6c071ad2b6
coverity#1242366: Unchecked return value

Change-Id: I3f3b5b5a7ce5e387dc2acddc086d9f8a2fa2b12b
coverity#1242365: Unchecked return value

Change-Id: Iddb8b1bad29bf372f9485514e2cde195237e3cc3