core: fix finbugs
core: fix finbugs

Change-Id: Ie256989b403263cef5f97bf049da4df2e838824a
Signed-off-by: Yair Zaslavsky <e2db7378c71f96998c1e6c0ce01fa87adf291bd0@redhat.com>

yingyun001/ovirt-engine,halober/ovirt-engine,walteryang47/ovirt-engine,yingyun001/ovirt-engine,yingyun001/ovirt-engine,yingyun001/ovirt-engine,eayun/ovirt-engine,walteryang47/ovirt-engine,OpenUniversity/ovirt-engine,zerodengxinchao/ovirt-engine,OpenUniversity/ovirt-engine,yapengsong/ovirt-engine,walteryang47/ovirt-engine,yingyun001/ovirt-engine,eayun/ovirt-engine,halober/ovirt-engine,yapengsong/ovirt-engine,eayun/ovirt-engine,walteryang47/ovirt-engine,yapengsong/ovirt-engine,halober/ovirt-engine,yapengsong/ovirt-engine,zerodengxinchao/ovirt-engine,halober/ovirt-engine,OpenUniversity/ovirt-engine,zerodengxinchao/ovirt-engine,OpenUniversity/ovirt-engine,zerodengxinchao/ovirt-engine,OpenUniversity/ovirt-engine,zerodengxinchao/ovirt-engine,yapengsong/ovirt-engine,eayun/ovirt-engine,eayun/ovirt-engine,walteryang47/ovirt-engine