Fix checks failing on first tab

qutebrowser/browser/commands.py

@@ -60,7 +60,7 @@ class CommandDispatcher:
     def _count(self) -> int:
         """Convenience method to get the widget count."""
         count = self._tabbed_browser.widget.count()
-        if count <= 0:
+        if count < 0:
             raise cmdutils.CommandError("No WebView available yet!")
         return count
 
@@ -72,7 +72,7 @@ class CommandDispatcher:
     def _current_index(self):
         """Convenience method to get the current widget index."""
         current_index = self._tabbed_browser.widget.currentIndex()
-        if current_index <= 0:
+        if current_index < 0:
             raise cmdutils.CommandError("No WebView available yet!")
         return current_index