A mistake in conversion to big endian in MssFragmentProcessor

[Andgoncharov]

In the 501 and 505 lines of MssFragmentProcessor.js 0x0000F000 mask is used instead of 0x0000FF00, when converting to big endian.

 avcC[i++] = (avcCLength & 0xFF000000) >> 24;
    avcC[i++] = (avcCLength & 0x00FF0000) >> 16;
    **avcC[i++] = (avcCLength & 0x0000F000) >> 8;**
    avcC[i++] = (avcCLength & 0x000000FF);

    esds[i++] = (esdsLength & 0xFF000000) >> 24; // esds box length
    esds[i++] = (esdsLength & 0x00FF0000) >> 16; // ''
    **esds[i++] = (esdsLength & 0x0000F000) >> 8; // ''**
    esds[i++] = (esdsLength & 0x000000FF); // ''

[nicosang]

Thanks again @Andgoncharov.

[LloydW93]

Closing as looks fixed in 1851.