Hi

If you specify a Single/Multiple choice question where you don't specify a option value for one of the options, then this option will not be ignored in survey calculations.
Either the option shouldn't be ignored, or user should get a validation error if trying to publish a survey where a option value is missing

Steps to reproduce

Install ezp + ezsurvey. then do:

<code>
1. Click "Content structure" in top menu
2. Create a new Survey
Name : test survey
3. Create new attribute "Single/Multiple Choice"
Text of question : Color
Create a new "Single/Multiple choice"
Text of question : Pick a color
Rendring style : Radio buttons in a row
Option label : "Red", Value:1, Order:1
Option label : "Blue", Value:2, Order:1
Option label : "Green", Value:, Order:1 (Important : Make sure the "Value" field is empty for this option)
4. Click "Send for publishing"
5. Click the "Preview" bar below the top menu
6. Click on link to "test survey"
7. Click on radio button for "Green"
8. Click "Submit" button
9. Click "Survey" tab in top menu
10. Click on "Results" icon in Survey list
11. Verify that Green has count=1, 100%
</code