Fix Android 4.3 or less support issue

[cheryjose]

package is breaking in stock browser and webview of Android OS versions 4.3 or less

[differui]

I have encounter same problem when using vue-property-decorator. could anyone give a hand to resolve the conflicts and merge the request?

[rbuckton]

I understand that this is a fairly old PR, for a fairly old version of Android at this point, but I've filed #152 as an alternative approach since this one seems to fill the byte array twice.

Closing in favor of #152.