[GTK] Fix peers tab flag tooltip error

Hovering over a country flag resulted in an AttributeError.

This is due to get_tooltip_context now returning a bool value instead of
the tooltip object.

Fixes: #3219

CHANGELOG.md

@@ -2,6 +2,10 @@
 
 ## 2.0.3 (WiP)
 
+### Gtk UI
+
+- Fix Peers Tab tooltip and context menu errors (#3266).
+
 ### Web UI
 
 - Fix TypeError in Peers Tab setting country flag.

deluge/ui/gtk3/peers_tab.py

@@ -352,10 +352,10 @@ class PeersTab(Tab):
             return True
 
     def _on_query_tooltip(self, widget, x, y, keyboard_tip, tooltip):
-        tooltip, x, y, model, path, _iter = widget.get_tooltip_context(
+        is_tooltip, x, y, model, path, _iter = widget.get_tooltip_context(
             x, y, keyboard_tip
         )
-        if tooltip:
+        if is_tooltip:
             country_code = model.get(_iter, 5)[0]
             if country_code != '  ' and country_code in COUNTRIES:
                 tooltip.set_text(COUNTRIES[country_code])