Update CipherBlockHeaders.java

Cleaning up some whitespace

Author: SalusaSecondus

src/main/java/com/amazonaws/encryptionsdk/model/CipherBlockHeaders.java

@@ -310,13 +310,13 @@ public int deserialize(/*@ nullable */ final byte[] b, final int off) {
         int parsedBytes = 0;
         try {
             if (nonceLength_ > 0 && nonce_ == null) {
-                parsedBytes += parseNonce(b, off + parsedBytes);    
+                parsedBytes += parseNonce(b, off + parsedBytes);
             }
-            
+
             if (contentLength_ < 0) {
                 parsedBytes += parseContentLength(b, off + parsedBytes);
             }
-            
+
             isComplete_ = true;
         } catch (ParseException e) {
             // this results when we do partial parsing and there aren't enough