IO: Open TemporaryBuffer.Heap in try-with-resource

Change-Id: I78a947fd1263b47b3df17bcc6e9b32497e68dd4a
Signed-off-by: David Pursehouse <david.pursehouse@gmail.com>

org.eclipse.jgit/src/org/eclipse/jgit/util/IO.java

@@ -203,12 +203,13 @@ public class IO {
 		if (last < 0)
 			return ByteBuffer.wrap(out, 0, pos);
 
-		@SuppressWarnings("resource" /* java 7 */)
+		try (TemporaryBuffer.Heap tmp = new TemporaryBuffer.Heap(
-		TemporaryBuffer.Heap tmp = new TemporaryBuffer.Heap(Integer.MAX_VALUE);
+				Integer.MAX_VALUE)) {
-		tmp.write(out);
+			tmp.write(out);
-		tmp.write(last);
+			tmp.write(last);
-		tmp.copy(in);
+			tmp.copy(in);
-		return ByteBuffer.wrap(tmp.toByteArray());
+			return ByteBuffer.wrap(tmp.toByteArray());
+		}
 	}
 
 	/**