Fix unsafe use of snprintf (#2861)
Fix unsafe use of snprintf (#2861)


jangorecki/data.table,Rdatatable/data.table,vlulla/data.table,vlulla/data.table,vlulla/data.table,Rdatatable/data.table,jangorecki/data.table,Rdatatable/data.table,vlulla/data.table,jangorecki/data.table,jangorecki/data.table,Rdatatable/data.table