Fix potential bugs without expected behavior change

- Fix uninitialized variables
- Fix potentially not set variables
- Fix wrong parameter default value
- Fix method scope
- Fix missing return value

src/Model/Item.php

@@ -1252,6 +1252,8 @@ class Item extends BaseObject
 	{
 		$orig_item = $item;
 
+		$priority = PRIORITY_HIGH;
+
 		// If it is a posting where users should get notifications, then define it as wall posting
 		if ($notify) {
 			$item['wall'] = 1;
@@ -1261,8 +1263,6 @@ class Item extends BaseObject
 
 			if (is_int($notify)) {
 				$priority = $notify;
-			} else {
-				$priority = PRIORITY_HIGH;
 			}
 		} else {
 			$item['network'] = trim(defaults($item, 'network', Protocol::PHANTOM));
@@ -1850,7 +1850,7 @@ class Item extends BaseObject
 				$cmd = 'wall-new';
 			}
 
-			Worker::add(['priority' => PRIORITY_HIGH, 'dont_fork' => true], 'Notifier', $cmd, $current_post);
+			Worker::add(['priority' => $priority, 'dont_fork' => true], 'Notifier', $cmd, $current_post);
 		}
 
 		return $current_post;