Description

Refactor CRenderingSystem{GL,GLES} to avoid crashes

Motivation and context

See #25245 nd #25243

How has this been tested?

First spotted on @anohren 's i386 machine and then reproduced on my AMD64 one - see #25245

What is the effect on users?

Kodi should shut down gracefully instead of crashing and leaving files in dangling state!

Screenshots (if appropriate):

Types of change

• Bug fix (non-breaking change which fixes an issue)
• Clean up (non-breaking change which removes non-working, unmaintained functionality)
• Improvement (non-breaking change which improves existing functionality)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that will cause existing functionality to change)
• Cosmetic change (non-breaking change that doesn't touch code)
• Student submission (PR was done for educational purposes and will be treated as such)
• None of the above (please explain below)

Checklist:

• My code follows the Code Guidelines of this project
• My change requires a change to the documentation, either Doxygen or wiki
• I have updated the documentation accordingly
• I have read the Contributing document
• I have added tests to cover my change
• All new and existing tests passed