Fix cleanup of connections.

shared/wait-for-psql.py

@@ -21,10 +21,9 @@
         try:
             conn = psycopg2.connect(user=args.db_user, host=args.db_host, port=args.db_port, password=args.db_password, dbname=args.db_name)
             error = ''
-            break
         except psycopg2.OperationalError as e:
             error = e
-        else:
+        finally:
             conn.close()
         time.sleep(1)