AbstractApplicationContext.getApplicationListeners() exposes all statically registered listeners

Issue: SPR-17324

(cherry picked from commit c8c0737ce7)

spring-context/src/main/java/org/springframework/context/support/AbstractApplicationContext.java

@@ -500,9 +500,7 @@ public abstract class AbstractApplicationContext extends DefaultResourceLoader
 		if (this.applicationEventMulticaster != null) {
 			this.applicationEventMulticaster.addApplicationListener(listener);
 		}
-		else {
-			this.applicationListeners.add(listener);
-		}
+		this.applicationListeners.add(listener);
 	}
 
 	/**