[TESTBUG] runtime/6878713/Test6878713.sh is written incorrectly

Test case is written in such a way that its execution status depends on whether some particular files are present in the current directory priror to execution, or not, causing problems:

if [ -s core -o -s "hs_*.log" ]
then
    cat hs*.log
    echo "Test Failed"
    exit 1
else
    echo "Test Passed"
    exit 0
fi

This dependency should be eliminated.