Initialize pointer members to NULL to avoid illegal reference

mBitmap and mTexture is not initialized to NULL which causes
illegal address access when it fails to be created from
oversized bitmap.

Change-Id: Iea54bec8788bc5f3a10040fdb43f416c0d41a14c
Merge "Initialize pointer members to NULL to avoid illegal reference"
Don't confuse stat and stat64.

Bug: 11865851
Change-Id: I45e65036d86c58943b9c273777f3f8be79a6966f
Merge "Don't confuse stat and stat64."