MEDIUM: mworker: stop the master proxy in the workers

The master proxy which handles the CLI should not be used or shown in
the stats of the workers. This proxy is now disabled after the fork.
diff --git a/src/cli.c b/src/cli.c
index 4ed8b93..6e7c3d0 100644
--- a/src/cli.c
+++ b/src/cli.c
@@ -2073,6 +2073,14 @@
  * The mworker functions are used to initialize the CLI in the master process
  */
 
+ /*
+ * Stop the mworker proxy
+ */
+void mworker_cli_proxy_stop()
+{
+	stop_proxy(mworker_proxy);
+}
+
 /*
  * Create the mworker CLI proxy
  */