Fix warning “’catch' block is unreachable because no errors are thrown in 'do' block”
Fix warning “’catch' block is unreachable because no errors are thrown in 'do' block”

drmohundro/SWXMLHash,jpsim/SWXMLHash,drmohundro/SWXMLHash,jpsim/SWXMLHash,jpsim/SWXMLHash