[bug]EXC_BAD_ACCESS KERN_INVALID_ADDRESS

[sugitatestblue]

io.agm.sampleBufferCallbackQueue
EXC_BAD_ACCESS KERN_INVALID_ADDRESS 0x0000000000000000

was happned in

CVPixelBufferRef buffer = [[FURenderer shareRenderer] renderPixelBuffer:pixelBuffer withFrameId:frameID items:readerItems itemCount:2 flipx:_flipx];