Fixed more warnings

src/main/java/com/hierynomus/sshj/transport/IdentificationStringParser.java

@@ -62,8 +62,11 @@ public class IdentificationStringParser {
         }
     }
 
-    private void logHeaderLine(Buffer.PlainBuffer lineBuffer) {
+    private void logHeaderLine(Buffer.PlainBuffer lineBuffer) throws Buffer.BufferException {
-
+        byte[] bytes = new byte[lineBuffer.available()];
+        lineBuffer.readRawBytes(bytes);
+        String header = new String(bytes, 0, bytes.length - 1);
+        log.debug("Received header: {}", header);
     }
 
     private String readIdentification(Buffer.PlainBuffer lineBuffer) throws Buffer.BufferException, TransportException {

src/main/java/net/schmizz/sshj/common/SecurityUtils.java

@@ -254,7 +254,7 @@ public class SecurityUtils {
                     throw new SSHRuntimeException("Failed to register BouncyCastle as the defaut JCE provider");
                 }
             }
-        }
             registrationDone = true;
         }
+    }
 }

src/main/java/net/schmizz/sshj/connection/channel/AbstractChannel.java

@@ -329,6 +329,8 @@ public abstract class AbstractChannel
 
     protected void gotUnknown(Message msg, SSHPacket buf)
             throws ConnectionException, TransportException {
+        log.warn("Got unknown packet with type {}", msg);
+
     }
 
     protected void handleRequest(String reqType, SSHPacket buf)

src/main/java/net/schmizz/sshj/sftp/PacketReader.java

@@ -24,10 +24,11 @@ import java.io.InputStream;
 import java.util.Map;
 import java.util.concurrent.ConcurrentHashMap;
 
-public class PacketReader
+public class PacketReader extends Thread {
-        extends Thread {
 
-    /** Logger */
+    /**
+     * Logger
+     */
     private final Logger log;
 
     private final InputStream in;

src/main/java/net/schmizz/sshj/transport/cipher/NoneCipher.java

@@ -46,10 +46,12 @@ public class NoneCipher
 
     @Override
     public void init(Mode mode, byte[] bytes, byte[] bytes1) {
+        // Nothing to do
     }
 
     @Override
     public void update(byte[] input, int inputOffset, int inputLen) {
+        // Nothing to do
     }
 
 }

src/test/java/net/schmizz/sshj/util/gss/BogusGSSContext.java

@@ -70,7 +70,9 @@ public class BogusGSSContext
     }
 
     @Override
-    public void dispose() throws GSSException {}
+    public void dispose() throws GSSException {
+        // Nothing to do
+    }
 
     @Override
     public int getWrapSizeLimit(int qop, boolean confReq, int maxTokenSize) throws GSSException {

src/test/java/net/schmizz/sshj/util/gss/BogusGSSCredential.java

@@ -34,7 +34,9 @@ public class BogusGSSCredential
     }
 
     @Override
-    public void dispose() throws GSSException {}
+    public void dispose() throws GSSException {
+        // Nothing to do
+    }
 
     @Override
     public GSSName getName() throws GSSException {