libmfx allocator: reworked vastatuses check
libmfx allocator: reworked vastatuses check

added returned value check for multiple VA functions:
vaDestroyBuffer, vaDestroySurfaces

Intel-Media-SDK/MediaSDK,Intel-Media-SDK/MediaSDK,Intel-Media-SDK/MediaSDK,Intel-Media-SDK/MediaSDK,Intel-Media-SDK/MediaSDK