Bug 2054239

Filed from caserun https://tcms.engineering.redhat.com/run/422939/#caserun_27499964

Version-Release number of selected component (if applicable):
RHEL-9.0.0-20220127.4
bash-5.1.8-2.el9

Steps to Reproduce: 
run the first reproducer from /CoreOS/ksh/Regression/memleaks


Actual results: 
memory usage grows over time

Expected results:
memory usage doesn't grow


the reproducer script (ignore the shebang and feed to bash directly):

#!/usr/bin/ksh

function _hash {
        typeset w=([abc]=1 [def]=31534 [xyz]=42)
        print -u2 $w 2>&-
        # accessing the var will leak
}
function _array {
        typeset w=(1 31534 42)
        print -u2 $w 2>&-
        # unset w will prevent leak
}

print ${.sh.version}

pmap -x $$ |tail -1
for (( j=0; j<100; j++)); do
        for (( i=0; i<10000; i++)); do
               _hash
        done
        pmap -x $$ |tail -1
done
sleep 1