408755 TIFF: initialize the layer being read with its IFD's color space
According to git blame, the TIFF converter never actually applied the colorspace of the image/layer being read. This led to Krita applying the main document's color space, which is clearly not intended.
Test Plan
Follow tiar's reproduction steps, or run KisTiffTest with the included repro case.
Formalities Checklist
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I confirmed this builds. -
I confirmed Krita ran and the relevant functions work. -
I tested the relevant unit tests and can confirm they are not broken. (If not possible, don't hesitate to ask for help!) -
I made sure my commits build individually and have good descriptions as per KDE guidelines. -
I made sure my code conforms to the standards set in the HACKING file. -
I can confirm the code is licensed and attributed appropriately, and that unattributed code is mine, as per KDE Licensing Policy.