tools/obexctl: Fix display of size on completion
Outputs zero as the transferred size on completion of transfer as below:
[CHG] Transfer /org/bluez/obex/server/session3/transfer2 Transferred: 5339965 (@32KB/s 00:01)
[CHG] Transfer /org/bluez/obex/server/session3/transfer2 Transferred: 5372726 (@32KB/s 00:00)
[CHG] Transfer /org/bluez/obex/server/session3/transfer2 Transferred: 0 (@18446744073704178KB/s 00:00)
[CHG] Transfer /org/bluez/obex/server/session3/transfer2 Status: complete
Change-Id: If1ea05b6126132936037860d9155e190fd87700c
Signed-off-by: Amit Purwar <amit.purwar@samsung.com>