Bug in onActivityDestroyed() method.

[Nstd]

DebugDrawer/debugdrawer/src/main/java/io/palaima/debugdrawer/DebugDrawerLifecycleCallbacks.java

Lines 43 to 47 in 49b5992

	public void onActivityStopped(Activity activity) {
	if (this.activity == activity) {
	debugDrawer.onStop();
	}
	}

DebugDrawer/debugdrawer/src/main/java/io/palaima/debugdrawer/DebugDrawerLifecycleCallbacks.java

Lines 54 to 59 in 49b5992

	@Override
	public void onActivityDestroyed(Activity activity) {
	this.activity.getApplication().unregisterActivityLifecycleCallbacks(this);
	this.activity = null;
	debugDrawer = null;
	}

If three drawer is open, and the third drawer is destroyed, the previous two DebugDrawerLifecycleCallbacks will also be removed.
I think the code in onActivityDestroyed method also need check If the Destroyed Activity is current activity or not.