Only trigger postDelete hooks when the user was deleted...

Signed-off-by: Joas Schilling <coding@schilljs.com>

lib/private/User/User.php

@@ -218,10 +218,10 @@ class User implements IUser {
 			$notification = \OC::$server->getNotificationManager()->createNotification();
 			$notification->setUser($this->uid);
 			\OC::$server->getNotificationManager()->markProcessed($notification);
-		}
 
-		if ($this->emitter) {
-			$this->emitter->emit('\OC\User', 'postDelete', array($this));
+			if ($this->emitter) {
+				$this->emitter->emit('\OC\User', 'postDelete', array($this));
+			}
 		}
 		return !($result === false);
 	}

tests/lib/User/UserTest.php

@@ -435,16 +435,17 @@ class UserTest extends \Test\TestCase {
 
 	public function dataDeleteHooks() {
 		return [
-			[true],
-			[false],
+			[true, 2],
+			[false, 1],
 		];
 	}
 
 	/**
 	 * @dataProvider dataDeleteHooks
 	 * @param bool $result
+	 * @param int $expectedHooks
 	 */
-	public function testDeleteHooks($result) {
+	public function testDeleteHooks($result, $expectedHooks) {
 		$hooksCalled = 0;
 		$test = $this;
 
@@ -521,7 +522,7 @@ class UserTest extends \Test\TestCase {
 		$this->restoreService('CommentsManager');
 		$this->restoreService('NotificationManager');
 
-		$this->assertEquals(2, $hooksCalled);
+		$this->assertEquals($expectedHooks, $hooksCalled);
 	}
 
 	public function testGetCloudId() {