Fix coverity defects: CID 147606, 147609
coverity scan CID:147606, Type:resource leak
coverity scan CID:147609, Type:resource leak
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: cao.xuewen <cao.xuewen@zte.com.cn>
Closes #5245