[FIX] base: creation of delivery or invoice partner

The image that is set based on the type should not be colorized as it has no
transparency (image_colorize method would fail).
The _get_default_image is called explicitely to pass False to colorize attribute.

A proper refactoring of the method _get_default_image has been done at 66d4de7
but for 9.0 versions, makes this minimal hack without changing signature method.

Fixes #11027

openerp/addons/base/res/res_partner.py

@@ -549,8 +549,9 @@ class res_partner(osv.Model, format_address):
 
     @api.model
     def create(self, vals):
-        if vals.get('type') and not self._context.get('partner_type'):
-            self = self.with_context(partner_type=vals['type'])
+        if vals.get('type') in ['delivery', 'invoice'] and not vals.get('image'):
+            # force no colorize for images with no transparency
+            vals['image'] = self.with_context(partner_type=vals['type'])._get_default_image(False, False)
         if vals.get('website'):
             vals['website'] = self._clean_website(vals['website'])
         # function field not correctly triggered at create -> remove me when