Fix ImageDataUtil.copyPixels crash on Hashlink (#1875) #1389

Job	Run time
docs	30s
air-samples (4.0.5)	3m 0s
flash-samples	36s
air-samples (4.1.5)	3m 59s
android	26m 3s
air-samples (4.2.5)	3m 6s
html5-samples	1m 43s
air-samples (4.3.1)	3m 42s
ios	26m 23s
linux	14m 43s
macos	16m 53s
windows	14m 36s
package-haxelib	1m 47s
neko-samples (3.4.7, windows-latest)	50s
hashlinkc-samples (windows-latest)	2m 9s
neko-samples (3.4.7, ubuntu-20.04)	47s
hashlink-samples (windows-latest)	52s
hashlinkc-samples (ubuntu-20.04)	1m 41s
neko-samples (3.4.7, macos-13)	50s
hashlink-samples (ubuntu-20.04)	24s
hashlinkc-samples (macos-13)	1m 48s
neko-samples (4.2.5, windows-latest)	52s
hashlink-samples (macos-13)	38s
neko-samples (4.2.5, ubuntu-20.04)	21s
neko-samples (4.2.5, macos-13)	41s
notify	15s
	2h 9m 9s

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