Build parameter settings are lost when you save the configuration. Regression since 1.284.

git-svn-id: https://hudson.dev.java.net/svn/hudson/trunk/hudson/main@15458 71c3de6d-444a-0410-be80-ed276b4c234a

core/src/main/java/hudson/model/ParametersDefinitionProperty.java

@@ -151,12 +151,14 @@ public class ParametersDefinitionProperty extends JobProperty<AbstractProject<?,
                 return null;
             }
 
-            if (req.getParameter("parameterized") == null) {
+            JSONObject parameterized = formData.getJSONObject("parameterized");
+
+            if (parameterized.isNullObject()) {
             	return null;
             }
             
             List<ParameterDefinition> parameterDefinitions = Descriptor.newInstancesFromHeteroList(
-                    req, formData, "parameter", ParameterDefinition.LIST);
+                    req, parameterized, "parameter", ParameterDefinition.LIST);
             if(parameterDefinitions.isEmpty())
                 return null;