Fix Werror=uninitialized errors... lazily

Change-Id: If7a8dca054ef380941a9538fe4092ff8549ee7ed
Wno some gcc4.8 (error[])warnings

Change-Id: Ie3061b012b5f49ca1d2188675129b6b1b3a6964f
Fix build for nexus 5 (hammerhead) camera with gcc-4.8+
-Wno-error=unused-parameter