Polish "Use try-with-resources when applicable"

See gh-32610

spring-jms/src/main/java/org/springframework/jms/support/JmsUtils.java

@@ -74,12 +74,9 @@ public abstract class JmsUtils {
 		if (con != null) {
 			try {
 				if (stop) {
-					try {
+					try (con) {
 						con.stop();
 					}
-					finally {
-						con.close();
-					}
 				}
 				else {
 					con.close();