Make it so when a URL is opened and there are no open tabs, use the existing tab

App/SceneDelegate.swift

@@ -53,8 +53,12 @@ class SceneDelegate: UIResponder, UIWindowSceneDelegate {
     func scene(_ scene: UIScene, openURLContexts URLContexts: Set<UIOpenURLContext>)
     {
         for urlContext in URLContexts {
+            if browserViewController?.tab.url == nil {
+                browserViewController?.tab.beginLoadingURL(urlContext.url)
+            } else {
                 browserViewController?.createNewTab(withURL: urlContext.url)
             }
         }
     }
+}