Mark this 'while True' loop with 'finite' comment
Mark this 'while True' loop with 'finite' comment

If we're going to embark on a mission to rid ourselves of
infinitely-looping while loops, it seems smart to start marking the ones
we've fixed in order to make grepping for unfixed loops easier.

Signed-off-by: Zack Cerza <f801c831581d4150a2793939287636221d62131e@inktank.com>

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