compareMessages should check instance equality first

If the two instances are equal, return 0 (Messages are equal).
This has no effect on correctness, it's just a minor performance shortcut.

Flag: EXEMPT minor cleanup
Change-Id: I57f4ce50c7ba1e39bc1c8d338381499dd8c01719

parent b91340c1

core/java/android/os/Message.java

+4 −0

Original line number	Diff line number	Diff line
		@@ -551,6 +551,10 @@ public final class Message implements Parcelable {
		}

		/package/ static int compareMessages(@NonNull Message m1, @NonNull Message m2) {
		if (m1 == m2) {
		return 0;
		}

		// Primary queue order is by when.
		// Messages with an earlier when should come first in the queue.
		final long whenDiff = m1.when - m2.when;