fix history segfault following transport disconnect

fix history segfault following transport disconnect

The segmentation fault manifests if the remote
disconnects pbap transport followed by a refresh
pbap data operation.
The root cause is a read operation of
vcard data for the calls history, ignoring the error
triggered while attempting to access the
corresponding file on the remote device.
The current patch introduces the missing check for
errors.

SPEC-3652
Signed-off-by: Raquel Medina <raquel.medina@konsulko.com>
Change-Id: I916ba5b8b5fc29aa9b928dbf2ed3e7c892d15891

test & deleteme

Signed-off-by: Raquel Medina <raquel.medina@konsulko.com>
Change-Id: I9efa151af54ae87cbf7e67bb6b985a76e0814549