Fix to prevent total clamav module failure when buffer is too long
Fix to prevent total clamav module failure when buffer is too long

jmlong1027/multiscanner,jmlong1027/multiscanner,awest1339/multiscanner,MITRECND/multiscanner,awest1339/multiscanner,awest1339/multiscanner,jmlong1027/multiscanner,jmlong1027/multiscanner,awest1339/multiscanner,MITRECND/multiscanner,mitre/multiscanner,mitre/multiscanner,mitre/multiscanner