coverity#1223092 Uninitialized scalar field

Change-Id: Ibfbc85562d30c541eada430759a0bda9305d9850

dbaccess/source/ui/dlg/indexfieldscontrol.cxx

@@ -95,6 +95,8 @@ namespace dbaui
         , m_aSeekRow(m_aFields.end())
         , m_pSortingCell(NULL)
         , m_pFieldNameCell(NULL)
+        , m_nMaxColumnsInIndex(0)
+        , m_bAddIndexAppendix(false)
     {
 
         SetUniqueId( UID_DLGINDEX_INDEXDETAILS_BACK );