FactoryBean object cache cleared on shutdown

Issue: SPR-15722

spring-beans/src/main/java/org/springframework/beans/factory/support/FactoryBeanRegistrySupport.java

@@ -221,7 +221,16 @@ public abstract class FactoryBeanRegistrySupport extends DefaultSingletonBeanReg
 	}
 
 	/**
-	 * Returns the security context for this bean factory. If a security manager
+	 * Overridden to clear the FactoryBean object cache as well.
+	 */
+	@Override
+	public void destroySingletons() {
+		super.destroySingletons();
+		this.factoryBeanObjectCache.clear();
+	}
+
+	/**
+	 * Return the security context for this bean factory. If a security manager
 	 * is set, interaction with the user code will be executed using the privileged
 	 * of the security context returned by this method.
 	 * @see AccessController#getContext()