crash in tools->options->advanced

regression from...

commit 06562c67
Date:   Sat Oct 18 10:36:36 2014 +0200

    convert SV_BMP_ constants to enum

    Change-Id: I46cb7f649fa44d8967e0e7da03583157d2706f05
    Reviewed-on: https://gerrit.libreoffice.org/12018Reviewed-by: Noel Grandin <noelgrandin@gmail.com>
Tested-by: Noel Grandin <noelgrandin@gmail.com>

Change-Id: I29486e8fe17d9e06e01c33f93d99ffc6ae3d017c

svtools/source/contnr/svlbitm.cxx

@@ -35,12 +35,12 @@ struct SvLBoxButtonData_Impl
     SvLBoxButtonData_Impl() : pEntry( NULL ), bDefaultImages( false ), bShowRadioButton( false ) {}
 };
 
-
-
 void SvLBoxButtonData::InitData( bool bImagesFromDefault, bool _bRadioBtn, const Control* pCtrl )
 {
     nWidth = nHeight = 0;
 
+    aBmps.resize((int)SvBmp::STATICIMAGE+1);
+
     pImpl = new SvLBoxButtonData_Impl;
 
     bDataOk = false;