Enforce type of inheriting view

issue5036
review18711002

carrier.xml

@@ -5,7 +5,7 @@ this repository contains the full copyright notices and license terms. -->
     <data>
         <record model="ir.ui.view" id="carrier_view_form">
             <field name="model">carrier</field>
-            <field name="type">form</field>
+            <field name="type" eval="None"/>
             <field name="inherit" ref="carrier.carrier_view_form"/>
             <field name="name">carrier_form</field>
         </record>