ref #1096, reduce memory usage by about 50% for large data spreadsheet

1 files changed, 5 insertions, 0 deletions

diff --git a/file.go b/file.go
index 1849bea..1f2b772 100644
--- a/file.go
+++ b/file.go
@@ -85,6 +85,11 @@ func (f *File) SaveAs(name string, opt ...Options) error {
 // Close closes and cleanup the open temporary file for the spreadsheet.
 func (f *File) Close() error {
 	var err error
+	if f.sharedStringTemp != nil {
+		if err := f.sharedStringTemp.Close(); err != nil {
+			return err
+		}
+	}
 	f.tempFiles.Range(func(k, v interface{}) bool {
 		if err = os.Remove(v.(string)); err != nil {
 			return false