Currently when converting leads we may end up with False being compared to
a void partner recordset. Due to the use of != this leads to unnecessary
update of leads when no partner is involved in lead convert.
By comparing recordsets everytime we save queries and performance each
time a convert on a lead without customer is done. This leads to about
saving 150 queries in heavy duty tests.
Task-2722512 (Lead: performance in convert without customer)
Task-2722513 (Lead: performance master task)
closesodoo/odoo#81028
Related: odoo/enterprise#23094
Signed-off-by: Thibault Delavallee (tde) <tde@openerp.com>
Thibault Delavallée
25c4f406f7