Change Fit() back to using SetSize, not SetClientSize.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@40505 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/common/wincmn.cpp

@@ -396,7 +396,7 @@ void wxWindowBase::Fit()
 {
     if ( !GetChildren().empty() )
     {
-        SetClientSize(GetBestSize());
+        SetSize(GetBestSize());
     }
     //else: do nothing if we have no children
 }