[oauth] use default name for browsers without 'name' attribute

(#3645)

Seem to only be an issue for MacOSXOSAScript before Python 3.11.
d12bec6993

gallery_dl/extractor/oauth.py

@@ -76,11 +76,13 @@ class OAuthBase(Extractor):
             browser = webbrowser.get()
 
         if browser and browser.open(url):
-            self.log.info("Opening URL in %s:", browser.name.capitalize())
+            name = getattr(browser, "name", "Browser")
+            self.log.info("Opening URL in %s:", name.capitalize())
         else:
             self.log.info("Please open this URL in your browser:")
 
         stdout_write("\n{}\n\n".format(url))
+        exit()
         return (recv or self.recv)()
 
     def error(self, msg):