RTEMS | cpukit/stackchk: Remove additional offset of SANITY_PATTERN_SIZE_WORDS (!197)

[Kinsey Moore (@opticron)]

Kinsey Moore created a merge request: https://gitlab.rtems.org/rtems/rtos/rtems/-/merge_requests/197

Project:Branches: opticron/rtems:stack-checker-bounds to rtems/rtos/rtems:main
Author:   Kinsey Moore
Assignee: Kinsey Moore



## Summary

cpukit/stackchk: Remove additional offset of SANITY_PATTERN_SIZE_WORDS

This offset is already accounted for by Stack_check_Usable_stack_start()
called from Stack_check_Visit_stack() and adding it a second time can
cause interaction beyond the bounds of the stack.


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View it on GitLab: https://gitlab.rtems.org/rtems/rtos/rtems/-/merge_requests/197
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