mynewt_log_mgmt: Fix CI build
diff --git a/cmd/log_mgmt/port/mynewt/src/mynewt_log_mgmt.c b/cmd/log_mgmt/port/mynewt/src/mynewt_log_mgmt.c
index 9806c0a..77ce6cd 100644
--- a/cmd/log_mgmt/port/mynewt/src/mynewt_log_mgmt.c
+++ b/cmd/log_mgmt/port/mynewt/src/mynewt_log_mgmt.c
@@ -47,7 +47,7 @@
     }
 }
 
-static int
+__attribute__((__unused__)) static int
 log_mgmt_mynewt_err_map(int mynewt_os_err)
 {
     switch (mynewt_os_err) {