Import f202839ffc: broke textureCache during revert; fixed (by Caitlyn)

[daleglass]

This is an automated proposal to look at a commit made by Caitlyn and import it into Overte

Commit:	f202839ffc7918d26b43d5587a6432a7010349ca
Author:	Caitlyn
Date:	Tue, 05 May 2020 14:01

broke textureCache during revert; fixed

Stats:

Filename	Stats	Lines	Added	Removed	Lines in blame
libraries/qml/src/qml/impl/TextureCache.cpp		1429	121	1308	121
libraries/qml/src/qml/impl/TextureCache.h		283	53	230	53
2 files	-	1712	174	1538	174

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