[fix] minor problem in m2o
[fix] minor problem in m2o

gisce/openerp-web,splbio/openerp-web,MarkusTeufelberger/openerp-web,gisce/openerp-web,vnc-biz/openerp-web,vnc-biz/openerp-web,vnc-biz/openerp-web,splbio/openerp-web,MarkusTeufelberger/openerp-web,MarkusTeufelberger/openerp-web,gisce/openerp-web,vnc-biz/openerp-web,splbio/openerp-web