Fix some compile warnings

spring-boot-tools/spring-boot-loader/src/test/java/org/springframework/boot/loader/archive/ExplodedArchiveTests.java

@@ -126,6 +126,7 @@ public class ExplodedArchiveTests {
 	}
 
 	@Test
+	@SuppressWarnings("resource")
 	public void getFilteredArchive() throws Exception {
 		Archive filteredArchive = this.archive
 				.getFilteredArchive(new Archive.EntryRenameFilter() {

spring-boot-tools/spring-boot-loader/src/test/java/org/springframework/boot/loader/jar/RandomAccessJarFileTests.java

@@ -281,6 +281,7 @@ public class RandomAccessJarFileTests {
 	}
 
 	@Test
+	@SuppressWarnings("resource")
 	public void verifySignedJar() throws Exception {
 		String classpath = System.getProperty("java.class.path");
 		String[] entries = classpath.split(System.getProperty("path.separator"));