Consistent use of StringUtils.toStringArray

(cherry picked from commit 6d11b40)

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

@@ -551,7 +551,7 @@ public class DefaultListableBeanFactory extends AbstractAutowireCapableBeanFacto
 				results.add(beanName);
 			}
 		}
-		return results.toArray(new String[results.size()]);
+		return StringUtils.toStringArray(results);
 	}
 
 	@Override

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

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2017 the original author or authors.
+ * Copyright 2002-2018 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.
@@ -502,7 +502,7 @@ public class DefaultSingletonBeanRegistry extends SimpleAliasRegistry implements
 		if (dependenciesForBean == null) {
 			return new String[0];
 		}
-		return dependenciesForBean.toArray(new String[dependenciesForBean.size()]);
+		return StringUtils.toStringArray(dependenciesForBean);
 	}
 
 	public void destroySingletons() {

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

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2017 the original author or authors.
+ * Copyright 2002-2018 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.
@@ -338,7 +338,7 @@ public class StaticListableBeanFactory implements ListableBeanFactory {
 				results.add(beanName);
 			}
 		}
-		return results.toArray(new String[results.size()]);
+		return StringUtils.toStringArray(results);
 	}
 
 	@Override