converity#738797 Uninitialized pointer field

Change-Id: I84cd8b6542d2b52df620d56eb6492139a1d60c10
converity#707956 Uninitialized scalar field

Change-Id: Ic341502383de8a5b0843d2c4c15e7388818a6027
converity#1249470 Uninitialized scalar field

comment it's unnecessary

Change-Id: Iebf2d1dbed1f9c1e2e09144f47e73d9628355f2e