Update cli_setup_bootstrap.py

Author: AnuravModak

src/oci_cli/cli_setup_bootstrap.py

@@ -139,13 +139,13 @@ def create_user_session(region='', tenancy_name=None):
     # try to set up http server so we can fail early if the required port is in use
     try:
         # Firstly, we will check if PORT is available or not
-        BOOTSTRAP_SERVICE_PORT=is_port_available(BOOTSTRAP_SERVICE_PORT)
-        server_address = ('', BOOTSTRAP_SERVICE_PORT)
+        boot_strap_service_port=is_port_available(BOOTSTRAP_SERVICE_PORT)
+        server_address = ('', boot_strap_service_port)
         httpd = StoppableHttpServer(server_address, StoppableHttpRequestHandler)
     except OSError as e:
         if e.errno == errno.EADDRINUSE:
             click.echo("Could not complete bootstrap process because port {port} is already in use.".format(
-                port=BOOTSTRAP_SERVICE_PORT)
+                port=boot_strap_service_port)
             )
 
             sys.exit(1)