forms: Fix warnings when creating a new custom form

include/class.dynamic_forms.php

@@ -62,7 +62,9 @@ class DynamicForm extends VerySimpleModel {
     }
 
     function getDynamicFields() {
-        if (!$this->_dfields && isset($this->id)) {
+        if (!isset($this->id))
+            return array();
+        elseif (!$this->_dfields) {
             $this->_dfields = DynamicFormField::objects()
                 ->filter(array('form_id'=>$this->id))
                 ->all();

scp/forms.php

@@ -11,6 +11,7 @@ if($_POST) {
     $required = array('title');
     $max_sort = 0;
     $form_fields = array();
+    $names = array();
     switch(strtolower($_POST['do'])) {
         case 'update':
             foreach ($fields as $f)
@@ -20,7 +21,6 @@ if($_POST) {
                 elseif (isset($_POST[$f]))
                     $form->set($f, $_POST[$f]);
             $form->save(true);
-            $names = array();
             foreach ($form->getDynamicFields() as $field) {
                 $id = $field->get('id');
                 if ($_POST["delete-$id"] == 'on' && $field->isDeletable()) {