Has the Bridge on the River Kwai Bluray been censored?

I was watching the new Bluray edition of Bridge on the River Kwai. I noticed that at one point, when Alec Guinness is surveying the bridge for the first time, the sound of water splashing obscures one of his lines: "We can teach these [SPLASH] a lesson in Western methods and efficiency." The subtitles on the disc gloss over it with "We can teach them a lesson...", but that's obviously not the line. A transcript of the movie I found online showed the missing word as "barbarians". Has this Bluray indeed been censored? Was this on prior DVD editions or even the original cut of the film, or has David Lean's film actually been altered?