crashtesting: failure on export of ooo118068-1.ods to ods

since
    commit 7282014e
    Date:   Fri Feb 1 15:15:16 2019 +0100
    tdf#50916 Makes numbers of columns dynamic

Change-Id: Ib8dc06b80beed81a2543f343483599c425e87369
Reviewed-on: https://gerrit.libreoffice.org/70901
Tested-by: Jenkins
Reviewed-by: Noel Grandin <noel.grandin@collabora.co.uk>

sc/inc/document.hxx

@@ -2454,6 +2454,7 @@ public:
     void                    DeleteBroadcasters( sc::ColumnBlockPosition& rBlockPos, const ScAddress& rTopPos, SCROW nLength );
 
     std::unique_ptr<sc::ColumnIterator> GetColumnIterator( SCTAB nTab, SCCOL nCol, SCROW nRow1, SCROW nRow2 ) const;
+    void CreateColumnIfNotExists( SCTAB nTab, SCCOL nCol );
 
     SC_DLLPUBLIC void StoreTabToCache(SCTAB nTab, SvStream& rStrm) const;
     SC_DLLPUBLIC void RestoreTabFromCache(SCTAB nTab, SvStream& rStream);

sc/source/core/data/document10.cxx

@@ -916,6 +916,15 @@ std::unique_ptr<sc::ColumnIterator> ScDocument::GetColumnIterator( SCTAB nTab, S
     return pTab->GetColumnIterator(nCol, nRow1, nRow2);
 }
 
+void ScDocument::CreateColumnIfNotExists( SCTAB nTab, SCCOL nCol )
+{
+    const ScTable* pTab = FetchTable(nTab);
+    if (!pTab)
+        return;
+
+    pTab->CreateColumnIfNotExists(nCol);
+}
+
 bool ScDocument::EnsureFormulaCellResults( const ScRange& rRange, bool bSkipRunning )
 {
     bool bAnyDirty = false;

sc/source/filter/xml/XMLStylesExportHelper.cxx

@@ -455,6 +455,7 @@ void ScMyDefaultStyles::FillDefaultStyles(const sal_Int32 nTable,
         return ;
 
     SCTAB nTab = static_cast<SCTAB>(nTable);
+    pDoc->CreateColumnIfNotExists(nTab, nLastCol);
     sal_Int32 nPos;
     ScMyDefaultStyleList* pDefaults = &maColDefaults;
     bool bPrevAutoStyle(false);