Xavier BOL (xbo)
a6e7c41d5e
Before this commit, the className can be null and then this processing:
`this.className += ' o_clickable_m2x_avatar';` gives
'null o_clickable_m2x_avatar' in the class of the element classList.
This commit checks if the className is not null if yes, then we add the
the class otherwise the className is created in this mixins.
closes odoo/odoo#71461
X-original-commit: d25459e6cb
Related: odoo/enterprise#18605
Signed-off-by: Aaron Bohy (aab) <aab@odoo.com>