fix build

Author: chernser

client-v2/src/main/java/com/clickhouse/client/api/data_formats/internal/SerializerUtils.java

@@ -889,15 +889,17 @@ private static void binaryReaderMethodForType(MethodVisitor mv, Class<?> targetT
         int convertOpcode = -1;
 
         switch (dataType) {
-            case Int8, Enum8:
+            case Int8:
+            case Enum8:
                 readerMethod = "readByte";
                 readerMethodReturnType = Type.getDescriptor(byte.class);
                 break;
             case UInt8:
                 readerMethod = "readUnsignedByte";
                 readerMethodReturnType = Type.getDescriptor(short.class);
                 break;
-            case Int16, Enum16:
+            case Int16:
+            case Enum16:
                 readerMethod = "readShortLE";
                 readerMethodReturnType = Type.getDescriptor(short.class);
                 break;