Avoid scoped destruction callbacks in case of no post-processor actually applying

Issue: SPR-13744

spring-webmvc/src/main/java/org/springframework/web/servlet/handler/SimpleServletPostProcessor.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2012 the original author or authors.
+ * Copyright 2002-2015 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -126,6 +126,11 @@ public class SimpleServletPostProcessor implements
 		}
 	}
 
+	@Override
+	public boolean requiresDestruction(Object bean) {
+		return (bean instanceof Servlet);
+	}
+
 
 	/**
 	 * Internal implementation of the {@link ServletConfig} interface,