RTEMS | dosfs: Avoid NULL pointer dereference UB (!1348)

[Yang Zhang (@Chloe)]

Yang Zhang created a merge request: https://gitlab.rtems.org/rtems/rtos/rtems/-/merge_requests/1348

Project:Branches: Chloe/rtems:fix-dosfs-null-deref to rtems/rtos/rtems:main
Author:   Yang Zhang



## Summary

When creating utf8 or default converters, if memory allocation or initialization fails, 'self' becomes NULL. Returning '&self-\>super' results in a NULL pointer dereference, which is Undefined Behavior in C. This updates the code to explicitly check for NULL before returning.

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View it on GitLab: https://gitlab.rtems.org/rtems/rtos/rtems/-/merge_requests/1348
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