Backport of 0de067cae9
(and 9b8bc5e5a1)
Rev. c5bd509274 attempted to improve the
pad sync mechanism when merging records (tasks), but failed to consider
the case where the pad_url field is not set yet.
This happens at create(), due to the chicken-and-egg problem with the
pad URL depending on the record ID, and therefore set *after* creation.
Ignoring the sync when the URL is not yet set should be enough, as the
URL generation method also takes care of that first sync.
Olivier Dony
08b75b7bcb