Add default block in HttpObjectDecoder (#11342)

Motivation:

There should always be a default in switch blocks.

Modification:

Add default

Result:

Code cleanup.

Signed-off-by: xingrufei <xingrufei@sogou-inc.com>

codec-http/src/main/java/io/netty/handler/codec/http/HttpObjectDecoder.java

@@ -407,6 +407,8 @@ public abstract class HttpObjectDecoder extends ByteToMessageDecoder {
             }
             break;
         }
+        default:
+            break;
         }
     }
 
@@ -492,6 +494,8 @@ public abstract class HttpObjectDecoder extends ByteToMessageDecoder {
             switch (code) {
             case 204: case 304:
                 return true;
+            default:
+                return false;
             }
         }
         return false;