Fix regression in Image.loadFromBytes #1186

Job	Run time
docs	37s
android	26m 41s
flash-samples	40s
air-samples (4.0.5)	2m 57s
html5-samples	1m 27s
air-samples (4.1.5)	2m 45s
ios	19m 15s
linux	14m 21s
air-samples (4.2.5)	3m 10s
air-samples (4.3.1)	2m 49s
macos	14m 25s
windows	14m 41s
package-haxelib	3m 55s
hashlinkc-samples (windows-latest)	2m 12s
neko-samples (3.4.7, windows-latest)	1m 20s
hashlinkc-samples (ubuntu-20.04)	2m 3s
hashlink-samples (windows-latest)	1m 13s
hashlinkc-samples (macos-12)	2m 23s
neko-samples (3.4.7, ubuntu-20.04)	2m 11s
hashlink-samples (ubuntu-20.04)	1m 13s
neko-samples (3.4.7, macos-12)	1m 48s
hashlink-samples (macos-12)	1m 53s
neko-samples (4.2.5, windows-latest)	1m 13s
neko-samples (4.2.5, ubuntu-20.04)	2m 19s
neko-samples (4.2.5, macos-12)	3m 25s
notify	3s
	2h 10m 59s

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