Add null pointer check for CopyInto. #1801

Job	Run time
raspi-2 / initialize	40s
raspi-2-skia / initialize	47s
raspi-2 / docker-build-image	3m 6s
raspi-2 / docker-unittest-image	0s
raspi-2-skia / docker-build-image	2m 58s
raspi-2-skia / docker-unittest-image	0s
raspi-2 / raspi_devel	11m 16s
raspi-2 / raspi_debug	14m 53s
raspi-2 / raspi_qa	10m 47s
raspi-2 / raspi_gold	9m 55s
raspi-2 / sbversion-15_devel	14m 5s
raspi-2 / sbversion-15_debug	16m 29s
raspi-2 / sbversion-15_qa	10m 8s
raspi-2 / sbversion-15_gold	9m 52s
raspi-2 / sbversion-16_devel	11m 47s
raspi-2 / sbversion-16_debug	19m 57s
raspi-2 / sbversion-16_qa	10m 35s
raspi-2 / sbversion-16_gold	9m 55s
raspi-2-skia / raspi-2-skia_devel	11m 20s
raspi-2-skia / raspi-2-skia_debug	15m 21s
raspi-2-skia / raspi-2-skia_qa	10m 8s
raspi-2-skia / raspi-2-skia_gold	10m 30s
raspi-2-skia / ${{ matrix.name }}_${{ matrix.shard }}_test	0s
raspi-2-skia / ${{ matrix.name }}_on_device_${{ matrix.shard }}	0s
raspi-2 / ${{ matrix.name }}_${{ matrix.shard }}_test	0s
raspi-2 / ${{ matrix.name }}_on_device_${{ matrix.shard }}	0s
	3h 24m 29s

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