Also save signature field when creating a new identity at login

program/include/rcube_user.php

@@ -421,18 +421,20 @@ class rcube_user
             'name' => strip_newlines($name),
             'email' => $email,
             'standard' => $standard,
+            'signature' => '',
           ),
         ));
           
         if (!$plugin['abort'] && $plugin['record']['email']) {
           $dbh->query(
               "INSERT INTO ".get_table_name('identities')."
-                (user_id, del, standard, name, email)
-               VALUES (?, 0, ?, ?, ?)",
+                (user_id, del, standard, name, email, signature)
+               VALUES (?, 0, ?, ?, ?, ?)",
               $user_id,
               $plugin['record']['standard'],
               $plugin['record']['name'] != NULL ? $plugin['record']['name'] : '',
-              $plugin['record']['email']);
+              $plugin['record']['email'],
+              $plugin['record']['signature']);
         }
         $standard = 0;
       }