fix #22615: read GuitarBend color

[rettinghaus]

Resolves: #22615

In latest develop simple GuitarBend color is written, but never read. This PR fixes this little flaw.

[mathesoncalum]

Does this solution work on your end? In this build I’m still losing the colour on save/reopen.



In principle, I think the idea with these read methods is to only read properties that “belong” to the element in question, and handle "inherited" properties by calling the reader for the element's superclass. With that in mind, I'm not sure we should be reading Pid::COLOR in this method (since it's an inherited property).

But this raises the question - why isn't the colour being read? In theory the colour should be handled by the call to TRead::readProperties(SLine*, and this approach seems to work for Glissando (another SLine subclass).

[rettinghaus]

@mathesoncalum Yes, something strange is goging on here. And no, it was working for something on my end, but deosn't any longer …
Have a look at my test file:

guitar.zip

The color is written as direct child for GuitarBendType 0, 1, and 3, but not for type 2, although it should.