In wxGDIPlusContext::GetTextExtent(), return more accurate text height if possible

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@64272 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/msw/graphics.cpp

@@ -1504,6 +1504,8 @@ void wxGDIPlusContext::GetTextExtent( const wxString &str, wxDouble *width, wxDo
         m_context->MeasureString((const wchar_t *) s , wcslen(s) , f, layoutRect, &strFormat, &bounds ) ;
         if ( width )
             *width = bounds.Width;
+        if ( height )
+            *height = bounds.Height;
     }
 }