Cosmetic changes to vp9_alloc_motion_field_info
Cosmetic changes to vp9_alloc_motion_field_info

Change-Id: I6808ac11a9a0f2137b30ae66773f6e3dcccef77d

ShiftMediaProject/libvpx,webmproject/libvpx,webmproject/libvpx,webmproject/libvpx,webmproject/libvpx,ShiftMediaProject/libvpx,ShiftMediaProject/libvpx,ShiftMediaProject/libvpx,ShiftMediaProject/libvpx,webmproject/libvpx,webmproject/libvpx