don't overflow column number during import, fdo#58539

This should fix the crash with kde#245919

Change-Id: I7c3af01e27233d2f94d5585247c59e7d5b6ea8ca

sc/source/filter/xml/xmlsubti.cxx

@@ -220,6 +220,8 @@ void ScMyTables::AddColStyle(const sal_Int32 nRepeat, const rtl::OUString& rCell
 {
     rImport.GetStylesImportHelper()->AddColumnStyle(rCellStyleName, nCurrentColCount, nRepeat);
     nCurrentColCount += nRepeat;
+    SAL_WARN_IF(nCurrentColCount > MAXCOL, "sc", "more columns than fit into SCCOL");
+    nCurrentColCount = std::min<sal_Int32>( nCurrentColCount, MAXCOL );
 }
 
 uno::Reference< drawing::XDrawPage > ScMyTables::GetCurrentXDrawPage()

sc/source/filter/xml/xmlsubti.hxx

@@ -87,7 +87,7 @@ public:
     ScXMLTabProtectionData&             GetCurrentProtectionData() { return maProtectionData; }
     rtl::OUString                       GetCurrentSheetName() const { return sCurrentSheetName; }
     SCTAB                               GetCurrentSheet() const { return (maCurrentCellPos.Tab() >= 0) ? maCurrentCellPos.Tab() : 0; }
-    SCCOL                               GetCurrentColCount() const { return nCurrentColCount; }
+    SCCOL                               GetCurrentColCount() const { return std::min<sal_Int32>(nCurrentColCount, MAXCOL); }
     SCROW                               GetCurrentRow() const { return (maCurrentCellPos.Row() >= 0) ? maCurrentCellPos.Row() : 0; }
     ::com::sun::star::uno::Reference< ::com::sun::star::sheet::XSpreadsheet >
                                         GetCurrentXSheet() const { return xCurrentSheet; }