Prevent savecore from reading bounds from the current directory.

[silby]

Summary

Prevent savecore from reading bounds from the current directory.

Rev 244218 removed the requirement that you provide a dump
directory when checking if there is a coredump ready to be written.
That had the side-effect of causing the bounds file to be read
from the current working directory instead of the dump directory.
As the bounds file is irrelevant when just checking, the simplest
fix is to not read the bounds file when checking.

Test Plan

Confirm that savecore is still able to check for core files.

[markj]

sbin/savecore/savecore.c

180

Style: parens around the return value.

[silby]

Added parens