EditListTest: Open InputStream in try-with-resource

Change-Id: Ib5b86e332ec674dec5460a9629d94d9f94c31c24
Signed-off-by: David Pursehouse <david.pursehouse@gmail.com>

org.eclipse.jgit.test/tst/org/eclipse/jgit/patch/EditListTest.java

@@ -90,17 +90,14 @@ public class EditListTest {
 	}
 
 	private Patch parseTestPatchFile(final String patchFile) throws IOException {
-		final InputStream in = getClass().getResourceAsStream(patchFile);
-		if (in == null) {
-			fail("No " + patchFile + " test vector");
-			return null; // Never happens
-		}
-		try {
+		try (InputStream in = getClass().getResourceAsStream(patchFile)) {
+			if (in == null) {
+				fail("No " + patchFile + " test vector");
+				return null; // Never happens
+			}
 			final Patch p = new Patch();
 			p.parse(in);
 			return p;
-		} finally {
-			in.close();
 		}
 	}
 }