show correct 0 instead of nothing

    # add comment with results

    lintResultNew=$(grep "Lint Report.* [0-9]* warnings" build/reports/lint/lint.html | cut -f2 -d':' |cut -f1 -d'<')

    lintErrorNew=$(echo $lintResultNew | grep  "[0-9]* error" -o | cut -f1 -d" ")

    if ( [ -z $lintErrorNew ] ); then

        lintErrorNew=0

    fi

    lintWarningNew=$(echo $lintResultNew | grep  "[0-9]* warning" -o | cut -f1 -d" ")

    if ( [ -z $lintWarningNew ] ); then

        lintWarningNew=0

    fi

    lintErrorOld=$(grep "[0-9]* error" scripts/analysis/lint-results.txt -o | cut -f1 -d" ")

    if ( [ -z $lintErrorOld ] ); then

        lintErrorOld=0

    fi

    lintWarningOld=$(grep "[0-9]* warning" scripts/analysis/lint-results.txt -o | cut -f1 -d" ")

    if ( [ -z $lintWarningOld ] ); then

        lintWarningOld=0

    fi

    lintResult="<h1>Lint</h1><table width='500' cellpadding='5' cellspacing='2'><tr class='tablerow0'><td>Type</td><td><a href='https://www.kaminsky.me/nc-dev/library-lint/master.html'>Master</a></td><td><a href='https://www.kaminsky.me/nc-dev/library-lint/"$6".html'>PR</a></td></tr><tr class='tablerow1'><td>Warnings</td><td>"$lintWarningOld"</td><td>"$lintWarningNew"</td></tr><tr class='tablerow0'><td>Errors</td><td>"$lintErrorOld"</td><td>"$lintErrorNew"</td></tr></table>"

    findbugsResultNew=$(sed -n "/<h1>Summary<\/h1>/,/<h1>Warnings<\/h1>/p" build/reports/findbugs/findbugs.html |head -n-1 | sed s'/<\/a>//'g | sed s'/<a.*>//'g | sed s"#Summary#<a href=\"https://www.kaminsky.me/nc-dev/library-findbugs/$6.html\">FindBugs</a> (new)#" | tr "\"" "\'" | tr -d "\n")

    findbugsResultOld=$(curl 2>/dev/null https://nextcloud.kaminsky.me/index.php/s/9BjSFLsWY988ZKR/download | tr "\"" "\'" | tr -d "\r\n" | sed s'#FindBugs#<a href=\"https://www.kaminsky.me/nc-dev/library-findbugs/master.html">FindBugs</a>#'| tr "\"" "\'" | tr -d "\n")