import inventory

[Fabrice Actergal @ Taktik]

Hello,

We discovered a bug in the wizard "Import Inventary" (openobject-addons/stock/wizard/stock_fill_inventory.py). The wizard does not take in account the case when a move has the same source and destination location.

Scenario :

1) Create a product.
2) Create a stock.move with quantity = 15, source location = supplier and dest location = stock and validate it
3) Create a stock.move with quantity = 10, source location = stock and dest location = stock and validate it
4) Create a stock.move with quantity = 5, source location = stock and dest location = customer and validate it

The final stock for this product should be 15 - (10 + 10) - 5 = 10, but the "Import Inventory" gives a result of 20.

This is because the test
    if move.location_dest_id.id == move.location_id.id:
        continue # ?
is never done and the wizard simply check if the dest location is stock, and if it is, it adds the quantity