handlers/register: make sure another user id is generated when a collision occurs

Signed-off-by: Patrik Oldsberg <patrik.oldsberg@ericsson.com>

1 files changed, 1 insertions, 0 deletions

diff --git a/synapse/handlers/register.py b/synapse/handlers/register.py

index 6d155d57e7..c5e5b28811 100644
--- a/synapse/handlers/register.py
+++ b/synapse/handlers/register.py
@@ -157,6 +157,7 @@ class RegistrationHandler(BaseHandler):
                     )
                 except SynapseError:
                     # if user id is taken, just generate another
+                    user = None
                     user_id = None
                     token = None
                     attempts += 1