fix

Author: icattlecoder

src/main/java/com/qiniu/api/net/EncodeUtils.java

@@ -46,8 +46,7 @@ public static byte[] urlsafeBase64Decode(String encoded){
 				rawbs[i] = '+';
 			}
 		}
-		byte[] db64 = Base64.decodeBase64(rawbs);
-		return db64;
+		return Base64.decodeBase64(rawbs);
 	}
 
 	public static String urlsafeEncodeString(byte[] src) {

src/test/java/com/qiniu/testing/UtilTest.java

@@ -20,4 +20,4 @@ public void test() throws Exception {
 	public void tearDown() {
 		// do nothing here.
 	}
-}
+}