yanglint UPDATE logging improved
diff --git a/tools/lint/cmd_debug.c b/tools/lint/cmd_debug.c
index 1432fe9..3661bfa 100644
--- a/tools/lint/cmd_debug.c
+++ b/tools/lint/cmd_debug.c
@@ -73,7 +73,7 @@
             cmd_debug_help();
             return 1;
         default:
-            YLMSG_E("Unknown option.\n");
+            YLMSG_E("Unknown option.");
             return 1;
         }
     }
@@ -117,7 +117,7 @@
     }
 
     if (!set) {
-        YLMSG_E("Unknown debug group \"%s\"\n", posv);
+        YLMSG_E("Unknown debug group \"%s\".", posv);
         return 1;
     }