Convert tabs to whitespace.

Author: Jeremy Rumpf

src/main/java/me/vzhilin/auth/parser/ChallengeResponseParser.java

@@ -139,8 +139,8 @@ private ChallengeResponse readDigestChallenge(ChallengeResponse challenge) throw
         } while (hasNext());
 
         if (challenge.getAlgorithm() == null) {
-        	challenge.addAlgorithm(DigestAlgorithm.MD5);
-	}
+            challenge.addAlgorithm(DigestAlgorithm.MD5);
+        }
 
         return challenge;
     }