[Bugfix][T106][task-view-57]Solve file handle may not right close

Only Configure: No
Affected branch: master
Affected module: FOTA
Is it affected on both ZXIC and MTK: ZXIC
Self-test: Yes
Doc Update: No

Change-Id: Ide89d4280cb42433646904fd17342aa26a37e125
1 file changed