Fix out of range panic when removing formula.

Fix file corruption issue when deleting a sheet containing a formula.

1 files changed, 1 insertions, 0 deletions

diff --git a/sheet.go b/sheet.go
index ec4df77..9960ef8 100644
--- a/sheet.go
+++ b/sheet.go
@@ -403,6 +403,7 @@ func (f *File) DeleteSheet(name string) {
 			rels := "xl/worksheets/_rels/sheet" + strconv.Itoa(v.SheetID) + ".xml.rels"
 			target := f.deleteSheetFromWorkbookRels(v.ID)
 			f.deleteSheetFromContentTypes(target)
+			f.deleteCalcChain(v.SheetID, "") // Delete CalcChain
 			delete(f.sheetMap, name)
 			delete(f.XLSX, sheet)
 			delete(f.XLSX, rels)