MINOR: cli: add mworker_accept_wrapper to 'show fd'

In the output of 'show fd', the worker CLI's socketpair was still
handled by an "unknown" function. That can be really confusing during
debug. Fixed it by showing "mworker_accept_wrapper" instead.
diff --git a/include/types/global.h b/include/types/global.h
index 02b9c26..7c6f954 100644
--- a/include/types/global.h
+++ b/include/types/global.h
@@ -272,6 +272,8 @@
 void hap_register_per_thread_init(int (*fct)());
 void hap_register_per_thread_deinit(void (*fct)());
 
+void mworker_accept_wrapper(int fd);
+
 #endif /* _TYPES_GLOBAL_H */
 
 /*
diff --git a/src/cli.c b/src/cli.c
index 4356586..ef58ba6 100644
--- a/src/cli.c
+++ b/src/cli.c
@@ -921,6 +921,7 @@
 			     (fdt.iocb == dgram_fd_handler) ? "dgram_fd_handler" :
 			     (fdt.iocb == listener_accept)  ? "listener_accept" :
 			     (fdt.iocb == poller_pipe_io_handler) ? "poller_pipe_io_handler" :
+			     (fdt.iocb == mworker_accept_wrapper) ? "mworker_accept_wrapper" :
 			     "unknown");
 
 		if (fdt.iocb == conn_fd_handler) {