MINOR: mworker: stores the mcli_reload bind_conf

Stores the mcli_reload bind_conf in order to identify it later.
diff --git a/src/cli.c b/src/cli.c
index c0d8efa..1391345 100644
--- a/src/cli.c
+++ b/src/cli.c
@@ -85,6 +85,7 @@
 extern const char *stat_status_codes[];
 
 struct proxy *mworker_proxy; /* CLI proxy of the master */
+struct bind_conf *mcli_reload_bind_conf;
 
 /* CLI context for the "show activity" command */
 struct show_activity_ctx {