Close stream.

git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@17516 20353a03-c40f-0410-a6d1-a30d3c3de9de

product/ERP5/Document/Image.py

@@ -400,6 +400,7 @@ class Image(File, OFSImage):
       writeData(imgin, self.getData())
       imgin.close()
       newimg.write(imgout.read())
+      imgout.close()
       newimg.seek(0)
       return newimg