Zip: reading file content fix

git-tfs-id: [http://falcon:8080/tfs/Projects]$/Phalanger/Main;C3914
catch() passes ScriptDiedException thru
(exception thrown by die; or exit; cannot be catch by PHP code now)

git-tfs-id: [http://falcon:8080/tfs/Projects]$/Phalanger/Main;C3915