tree e5ffb57ea3c3ed1c826bec5d88a5979333f51440
parent 427daccc380b1f9591da3ce9a7cc5012841820ea
author Wan-Teh Chang <wtc@google.com> 1669243882 -0800
committer Wan-Teh Chang <wtc@google.com> 1669762104 -0800

Require EditBox to contain exactly one EditListBox

The avifParseTrackBox() function has the following code after parsing
the boxes contained in the TrackBox:

    if (!edtsBoxSeen) {
        track->repetitionCount = AVIF_REPETITION_COUNT_UNKNOWN;
    } else if (track->isRepeating) {
	... sets track->repetitionCount based on track->trackDuration
	... and track->segmentDuration
    } else {
        track->repetitionCount = 0;
    }

The if (!edtsBoxSeen) test actually tests elstBoxSeen, because
track->isRepeating and track->segmentDuration come from an EditListBox.
Make edtsBoxSeen equal to elstBoxSeen by requiring an EditBox to contain
exactly one EditListBox.