MergeGitAttributeTest: Open FileInputStream in try-with-resource

Change-Id: Iec85eea044c46a199b5b6f6bdbb3191d817dd441
Signed-off-by: David Pursehouse <david.pursehouse@gmail.com>

org.eclipse.jgit.test/tst/org/eclipse/jgit/attributes/merge/MergeGitAttributeTest.java

@@ -313,7 +313,6 @@ public class MergeGitAttributeTest extends RepositoryTestCase {
 			WrongRepositoryStateException, NoMessageException, GitAPIException {
 
 		RevCommit disableCheckedCommit;
-		FileInputStream mergeResultFile = null;
 		// Set up a git with conflict commits on images
 		try (Git git = new Git(db)) {
 			// First commit
@@ -352,15 +351,12 @@ public class MergeGitAttributeTest extends RepositoryTestCase {
 			assertEquals(MergeStatus.CONFLICTING, mergeResult.getMergeStatus());
 
 			// Check that the image was not modified (no conflict marker added)
-			mergeResultFile = new FileInputStream(
+			try (FileInputStream mergeResultFile = new FileInputStream(
 					db.getWorkTree().toPath().resolve(ENABLED_CHECKED_GIF)
-							.toFile());
+							.toFile())) {
 				assertTrue(contentEquals(
 						getClass().getResourceAsStream(ENABLED_CHECKED_GIF),
 						mergeResultFile));
-		} finally {
-			if (mergeResultFile != null) {
-				mergeResultFile.close();
 			}
 		}
 	}
@@ -373,7 +369,6 @@ public class MergeGitAttributeTest extends RepositoryTestCase {
 			WrongRepositoryStateException, NoMessageException, GitAPIException {
 
 		RevCommit disableCheckedCommit;
-		FileInputStream mergeResultFile = null;
 		// Set up a git whith conflict commits on images
 		try (Git git = new Git(db)) {
 			// First commit
@@ -412,14 +407,12 @@ public class MergeGitAttributeTest extends RepositoryTestCase {
 			assertEquals(MergeStatus.CONFLICTING, mergeResult.getMergeStatus());
 
 			// Check that the image was not modified (not conflict marker added)
-			mergeResultFile = new FileInputStream(db.getWorkTree().toPath()
-					.resolve(ENABLED_CHECKED_GIF).toFile());
+			try (FileInputStream mergeResultFile = new FileInputStream(
+					db.getWorkTree().toPath().resolve(ENABLED_CHECKED_GIF)
+							.toFile())) {
 				assertTrue(contentEquals(
 						getClass().getResourceAsStream(ENABLED_CHECKED_GIF),
 						mergeResultFile));
-		} finally {
-			if (mergeResultFile != null) {
-				mergeResultFile.close();
 			}
 		}
 	}
@@ -432,7 +425,6 @@ public class MergeGitAttributeTest extends RepositoryTestCase {
 			NoMessageException, GitAPIException {
 
 		RevCommit disableCheckedCommit;
-		FileInputStream mergeResultFile = null;
 		// Set up a git whith conflict commits on images
 		try (Git git = new Git(db)) {
 			// First commit
@@ -471,14 +463,12 @@ public class MergeGitAttributeTest extends RepositoryTestCase {
 			assertEquals(MergeStatus.CONFLICTING, mergeResult.getMergeStatus());
 
 			// Check that the image was not modified (not conflict marker added)
-			mergeResultFile = new FileInputStream(db.getWorkTree().toPath()
-					.resolve(ENABLED_CHECKED_GIF).toFile());
+			try (FileInputStream mergeResultFile = new FileInputStream(
+					db.getWorkTree().toPath().resolve(ENABLED_CHECKED_GIF)
+							.toFile())) {
 				assertFalse(contentEquals(
 						getClass().getResourceAsStream(ENABLED_CHECKED_GIF),
 						mergeResultFile));
-		} finally {
-			if (mergeResultFile != null) {
-				mergeResultFile.close();
 			}
 		}
 	}