created an attachment (id=156604)
report design

description:
the temp file is not cleared up when there is more than one sheet in the generated xls.

build number:
2.5.2.v20100120-0630

steps to reproduce:
1. preview the attached report design as xls.
2. open the generated file and close it.
3. check the temp file in the following path:
c:\documents and settings\administrator\local settings\temp

expected result:
the temp files are cleared up.

actual result:
files with name like "_birtemitter_excel_temp_file*" are not cleared up.

error log:
n/a
created an attachment (id=156606)
zip file of the generated files
fixed the problem.
verified in build (2.5.2.v20100126-0630), closed.