qt: add missing cs_wallet lock in AddressTableModel::setData
qt: add missing cs_wallet lock in AddressTableModel::setData

duplicate check in AddressTableModel::setData accesses
wallet data structure as well as SetAddressBook without proper LOCK, fix this.

Conflicts:
	src/qt/addresstablemodel.cpp

Rebased-from: 72378a3b67c559310f8047a622ee109850f80e59 0.8.x

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