Pass win_id correctly with invalid_url_error.

qutebrowser/browser/downloads.py

@@ -362,7 +362,7 @@ class DownloadManager(QObject):
             page: The QWebPage to get the download from.
         """
         if not url.isValid():
-            urlutils.invalid_url_error(url, "start download")
+            urlutils.invalid_url_error('current', url, "start download")
             return
         req = QNetworkRequest(url)
         reply = page.networkAccessManager().get(req)

qutebrowser/browser/quickmarks.py

@@ -66,7 +66,7 @@ def prompt_save(win_id, url):
         url: The quickmark url as a QUrl.
     """
     if not url.isValid():
-        urlutils.invalid_url_error(url, "save quickmark")
+        urlutils.invalid_url_error(win_id, url, "save quickmark")
         return
     urlstr = url.toString(QUrl.RemovePassword | QUrl.FullyEncoded)
     message.ask_async(win_id, "Add quickmark:", usertypes.PromptMode.text,

qutebrowser/utils/urlutils.py

@@ -262,15 +262,20 @@ def qurl_from_user_input(urlstr):
         return QUrl('http://[{}]{}'.format(ipstr, rest))
 
 
-def invalid_url_error(url, action):
-    """Display an error message for an URL."""
+def invalid_url_error(win_id, url, action):
+    """Display an error message for an URL.
+
+    Args:
+        win_id: The window ID to show the error message in.
+        action: The action which was interrupted by the error.
+    """
     if url.isValid():
         raise ValueError("Calling invalid_url_error with valid URL {}".format(
             url.toDisplayString()))
     errstring = "Trying to {} with invalid URL".format(action)
     if url.errorString():
         errstring += " - {}".format(url.errorString())
-    message.error(errstring)
+    message.error(win_id, errstring)
 
 
 class FuzzyUrlError(Exception):

qutebrowser/widgets/tabbedbrowser.py

@@ -259,7 +259,7 @@ class TabbedBrowser(tabwidget.TabWidget):
             entry = UndoEntry(tab.cur_url, history_data)
             self._undo_stack.append(entry)
         else:
-            urlutils.invalid_url_error(tab.cur_url, "saving tab")
+            urlutils.invalid_url_error(self._win_id, tab.cur_url, "saving tab")
             return
         tab.shutdown()
         self.removeTab(idx)