Fix double nav controller in share extension

ShareExtension/ShareViewController.swift

@@ -33,17 +33,16 @@ class ShareViewController: UIViewController {
                 
                 let context = ShareMastodonContext(accountInfo: account)
                 let host = ShareHostingController(draft: draft, mastodonContext: context)
-                let nav = UINavigationController(rootViewController: host)
+                host.view.translatesAutoresizingMaskIntoConstraints = false
-                self.addChild(nav)
+                addChild(host)
-                nav.view.translatesAutoresizingMaskIntoConstraints = false
+                self.view.addSubview(host.view)
-                self.view.addSubview(nav.view)
                 NSLayoutConstraint.activate([
-                    nav.view.leadingAnchor.constraint(equalTo: self.view.leadingAnchor),
+                    host.view.leadingAnchor.constraint(equalTo: self.view.leadingAnchor),
-                    nav.view.trailingAnchor.constraint(equalTo: self.view.trailingAnchor),
+                    host.view.trailingAnchor.constraint(equalTo: self.view.trailingAnchor),
-                    nav.view.topAnchor.constraint(equalTo: self.view.topAnchor),
+                    host.view.topAnchor.constraint(equalTo: self.view.topAnchor),
-                    nav.view.bottomAnchor.constraint(equalTo: self.view.bottomAnchor),
+                    host.view.bottomAnchor.constraint(equalTo: self.view.bottomAnchor),
                 ])
-                nav.didMove(toParent: self)
+                host.didMove(toParent: self)
             }
         } else {
             state = .notLoggedIn