Help: Avoid double lookup for help tooltips

Save the HelpItem directly in the tooltip instead of the help ID which
would need to be looked up again.

Change-Id: I107e82e89d9ea26cad9d6532ad4c687d1ac8f1ec
Reviewed-by: David Schulz <david.schulz@qt.io>

src/plugins/texteditor/basehoverhandler.cpp

@@ -159,9 +159,10 @@ void BaseHoverHandler::operateTooltip(TextEditorWidget *editorWidget, const QPoi
     if (m_toolTip.isEmpty())
         Utils::ToolTip::hide();
     else
-        Utils::ToolTip::show(point, m_toolTip, editorWidget, m_lastHelpItemIdentified.isValid()
-                             ? m_lastHelpItemIdentified.helpId()
-                             : QString());
+        Utils::ToolTip::show(point,
+                             m_toolTip,
+                             editorWidget,
+                             qVariantFromValue(m_lastHelpItemIdentified));
 }
 
 } // namespace TextEditor