Pads-Mask Clearance: size dialog properly to avoid cut off text

pcbnew/dialogs/dialog_mask_clearance.cpp

@@ -1,7 +1,7 @@
 /*
  * This program source code file is part of KiCad, a free EDA CAD application.
  *
- * Copyright (C) 1992-2012 KiCad Developers, see AUTHORS.txt for contributors.
+ * Copyright (C) 1992-2018 KiCad Developers, see AUTHORS.txt for contributors.
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License
@@ -48,8 +48,8 @@ DIALOG_PADS_MASK_CLEARANCE::DIALOG_PADS_MASK_CLEARANCE( PCB_EDIT_FRAME* aParent
 
     myInit();
     m_sdbButtonsSizerOK->SetDefault();
-    GetSizer()->SetSizeHints( this );
-    Centre();
+    Layout();
+    FinishDialogSettings();
 }