More error checking on saving to .kra file
I added more checks on return values in various places in kra_saver and kra_converter. I think now kra_saver checks everything.
Note: this does changes strings.
Test Plan
Saving complex documents. Unit tests are passing, I think it might be just that it needs to be checked code-wise and then it can be merged and fixed in case someone complains...
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.