Javert doesn't take any offense to it at all — he is old and unremarkable, not anything he would expect anyone to be impressed by. These are just facts, observations that anyone with eyes can make, and so he doesn't even give it a response. Instead, he simply watches as the other man pours his drink, wasting it all. That seems to bother Javert somewhat, his brow furrowing a bit.

"Too strong for you?" he says, not forgetting Ransom's first remark. "A drink on an empty stomach will do no man no good."