fixed code style AbstractFieldReader.java

Author: xxlaykxx

vector/src/main/codegen/templates/AbstractFieldReader.java

@@ -124,7 +124,7 @@ public void copyAsValue(AbstractExtensionTypeWriter writer) {
   public void copyAsField(String name, AbstractExtensionTypeWriter writer) {
     fail("CopyAsFieldExtension");
   }
-  
+
   public FieldReader reader(String name) {
     fail("reader(String name)");
     return null;