Fix complaints about insecure $ENV{ENV}
Fix complaints about insecure $ENV{ENV}

Insecure $ENV{ENV} while running with -T switch at t/Util.pm line 325.
gregory-nisbet/ack2,h3xx/ack2,petdance/ack2,packy/ack2,openstrike/ack2,h3xx/ack2,karenetheridge/App-Ack,karenetheridge/App-Ack,openstrike/ack2,openstrike/ack2,gregory-nisbet/ack2,h3xx/ack2,packy/ack2,packy/ack2,gregory-nisbet/ack2,petdance/ack2,openstrike/ack2,packy/ack2,karenetheridge/App-Ack,karenetheridge/App-Ack,packy/ack2,packy/ack2,h3xx/ack2,petdance/ack2,karenetheridge/App-Ack,karenetheridge/App-Ack,petdance/ack2,h3xx/ack2,petdance/ack2,karenetheridge/App-Ack,petdance/ack2,h3xx/ack2,packy/ack2,gregory-nisbet/ack2,h3xx/ack2,karenetheridge/App-Ack,h3xx/ack2,openstrike/ack2,openstrike/ack2,openstrike/ack2,petdance/ack2,petdance/ack2,gregory-nisbet/ack2,gregory-nisbet/ack2,openstrike/ack2,packy/ack2,gregory-nisbet/ack2,gregory-nisbet/ack2