Guard against overflow in blur code #2022

Job	Run time
android-arm / initialize	39s
android-arm64 / initialize	43s
android-x86 / initialize	44s
android-arm / docker-build-image	2m 35s
android-arm / docker-unittest-image	0s
android-x86 / docker-build-image	2m 33s
android-x86 / docker-unittest-image	0s
android-arm64 / docker-build-image	2m 32s
android-arm64 / docker-unittest-image	0s
android-arm / arm_devel	17m 33s
android-arm / arm_debug	17m 38s
android-arm / arm_qa	10m 2s
android-arm / arm_gold	9m 26s
android-x86 / x86_devel	16m 52s
android-x86 / x86_debug	17m 39s
android-x86 / x86_qa	9m 57s
android-x86 / x86_gold	9m 36s
android-arm64 / arm64_devel	17m 4s
android-arm64 / arm64_debug	17m 24s
android-arm64 / arm64_qa	9m 26s
android-arm64 / arm64_gold	9m 43s
android-arm64 / ${{ matrix.name }}_${{ matrix.shard }}_test	0s
android-arm64 / ${{ matrix.name }}_on_device_${{ matrix.shard }}	0s
android-arm / ${{ matrix.name }}_on_device_${{ matrix.shard }}	0s
android-arm / ${{ matrix.name }}_${{ matrix.shard }}_test	0s
android-x86 / ${{ matrix.name }}_${{ matrix.shard }}_test	0s
android-x86 / ${{ matrix.name }}_on_device_${{ matrix.shard }}	0s
upload-release-artifacts	27s
	2h 52m 33s

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