Fix a bug where pinned tabs were occasionally miscounted

Example case: :tab-only. This should cover other cases, but currently those
cases (such as :tab-only) do NOT have a warning message when popping up.

qutebrowser/browser/commands.py

@@ -220,9 +220,6 @@ class CommandDispatcher:
             self._tabbed_browser.close_tab(tab)
             tabbar.setSelectionBehaviorOnRemove(old_selection_behavior)
 
-        if tab.data.pinned:
-            tabbar.pinned_count -= 1
-
     @cmdutils.register(instance='command-dispatcher', scope='window')
     @cmdutils.argument('count', count=True)
     def tab_close(self, prev=False, next_=False, opposite=False,
@@ -244,7 +241,8 @@ class CommandDispatcher:
                                   next_, opposite)
 
         if tab.data.pinned and not force:
-            message.confirm_async(title='Pinned Tab',
+            message.confirm_async(
+                title='Pinned Tab',
                 text="Are you sure you want to close a pinned tab?",
                 yes_action=close, default=False)
         else:

qutebrowser/mainwindow/tabbedbrowser.py

@@ -241,6 +241,10 @@ class TabbedBrowser(tabwidget.TabWidget):
         if last_close == 'ignore' and count == 1:
             return
 
+        # If we are removing a pinned tab, decrease count
+        if tab.data.pinned:
+            self.tabBar().pinned_count -= 1
+
         self._remove_tab(tab, add_undo=add_undo)
 
         if count == 1:  # We just closed the last tab above.

tests/end2end/features/conftest.py

@@ -163,6 +163,7 @@ def clean_open_tabs(quteproc):
     quteproc.send_cmd(':tab-close --force')
     quteproc.wait_for_load_finished_url('about:blank')
 
+
 @bdd.given('pdfjs is available')
 def pdfjs_available():
     if not pdfjs.is_available():