Avoid loop in GetNextKey.
Avoid loop in GetNextKey.

anthrotype/brotli,szabadka/brotli,smourier/brotli,google/brotli,google/brotli,anthrotype/brotli,anthrotype/brotli,google/brotli,smourier/brotli,minhlongdo/brotli,nicksay/brotli,google/brotli,minhlongdo/brotli,nicksay/brotli,google/brotli,szabadka/brotli,szabadka/brotli,nicksay/brotli,anthrotype/brotli,google/brotli,minhlongdo/brotli,minhlongdo/brotli,nicksay/brotli,smourier/brotli,nicksay/brotli,nicksay/brotli,szabadka/brotli,smourier/brotli,smourier/brotli,nicksay/brotli,google/brotli,anthrotype/brotli,google/brotli