Fix the account creation form prepopulated fields

Change-Id: Iecb5b22b5456b54f61c33cb040a4f932f17f7f76
Signed-off-by: Eric Poirier <eric@eclipse.org>

eclipse.org-common/classes/users/siteLogin.class.php

diff --git a/eclipse.org-common/classes/users/siteLogin.class.php b/eclipse.org-common/classes/users/siteLogin.class.php
index cf788b8..b24a44e 100644
--- a/eclipse.org-common/classes/users/siteLogin.class.php
+++ b/eclipse.org-common/classes/users/siteLogin.class.php
@@ -763,6 +763,13 @@
   }
 
   private function _get_default_profile_fields($get_default_values = FALSE){
+
+    // Making sure we don't have an empty user_uid to avoid pre-populating
+    // the account creation fields with an empty user_uid
+    if (empty($this->user_uid)) {
+      return FALSE;
+    }
+
     if (empty($this->messages['profile']['danger'])) {
       $sql = "SELECT /* USE MASTER */
         user_org as organization, user_jobtitle as jobtitle, user_bio as bio, user_interests as interests, user_website as website, user_twitter_handle as twitter_handle, user_country as country, user_gender as gender
@@ -829,6 +836,9 @@
     );
 
     # Validate values
+    if (empty($fields['user_uid']) || !is_string($fields['user_uid'])) {
+      $this->messages['profile']['danger'][] = 'Invalid user id<br>';
+    }
     if (!empty($fields['user_website']) && !filter_var($fields['user_website'], FILTER_VALIDATE_URL)) {
       $this->messages['profile']['danger'][] = 'Invalid website URL<br>';
     }