qutescheme: Simplify URL/path normalization logic

See #8711

qutebrowser/browser/qutescheme.py

@@ -123,26 +123,24 @@ def data_for_url(url: QUrl) -> tuple[str, bytes]:
 
     path = url.path()
     host = url.host()
-    query = url.query()
     # A url like "qute:foo" is split as "scheme:path", not "scheme:host".
     log.misc.debug("url: {}, path: {}, host {}".format(
         url.toDisplayString(), path, host))
-    if not path or not host:
-        new_url = QUrl()
-        new_url.setScheme('qute')
-        # When path is absent, e.g. qute://help (with no trailing slash)
-        if host:
-            new_url.setHost(host)
-        # When host is absent, e.g. qute:help
-        else:
-            new_url.setHost(path)
 
+    if not host:
+        # Redirect qute:help -> qute://help/
+        new_url = QUrl(url)
+        new_url.setHost(path)
         new_url.setPath('/')
-        if query:
-            new_url.setQuery(query)
         if new_url.host():  # path was a valid host
             raise Redirect(new_url)
 
+    if not path:
+        # Redirect qute://help -> qute://help/
+        new_url = QUrl(url)
+        new_url.setPath('/')
+        raise Redirect(new_url)
+
     try:
         handler = _HANDLERS[host]
     except KeyError: