Fix window size when {en,dis}abling status bar.

If the status bar option is enabled or disabled, there is a trigger that
resizes the current window geometry to its zoom configuration. What
should happen instead is the size remain the same.

src/wx/cmdevents.cpp

@@ -2594,7 +2594,8 @@ EVT_HANDLER(StatusBar, "Enable status bar")
         mf->GetStatusBar()->Hide();
 
     mf->SendSizeEvent();
-    panel->AdjustSize(true);
+    panel->AdjustSize(false);
+    mf->SendSizeEvent();
 }
 
 EVT_HANDLER(NoStatusMsg, "Disable on-screen status messages")