various: add LICENSE comments.

[ccan] / ccan / opt / usage.c

diff --git a/ccan/opt/usage.c b/ccan/opt/usage.c
index 4d784bc2be73550a5b9818a31a245eafbc56adf7..f321ed2949a8bfb7cd5cdbce5955780dba1cd233 100644 (file)
--- a/ccan/opt/usage.c
+++ b/ccan/opt/usage.c
@@ -1,3 +1,4 @@
+/* Licensed under GPLv3+ - see LICENSE file for details */
 #include <ccan/opt/opt.h>
 #include <string.h>
 #include <stdlib.h>