fix for TEST(LayerCommands, addSubLayer)

[pmolodo]

Description (this won't be part of the changelog)

Fairly sure that there's a bug with the above test - the command adds a "root" layer, which itself has a sublayer, so two more layers get added to the main layer stack when it is added... but the code only expects one new layer. Perhaps this is a usd-0.8.3 or usd-0.8.4 change? Does this test pass for you folks with 0.8.2?

Fixed

• fix for TEST(LayerCommands, addSubLayer) - expect command to add TWO layers to stack

Checklist (Please do not remove this line)

• [x] Make sure the Title and Description of the PR make sense and provide sufficient context for your work
• [x] Do any added files have the correct AL Apache Licence Header?
• [x] Are there Doxygen comments in the headers?
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• [x] Have you added, updated tests to cover new features and behaviour changes?
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[dbaz]

Ah yes it passes for us. Wondering if it is because we are getting an error with a reference in the root.usda file and it somehow breaks the subLayer coming from the root.usda.. But you are right I would expect there to be 5. I'll try look into this soon!

[pmolodo]

superceded by 1a293035438b51ee570317e16b3543c6059ab976