Fix forgotten license comments

diff --git a/networking/wget.c b/networking/wget.c
index 3f80d61..b40a1ac 100644
--- a/networking/wget.c
+++ b/networking/wget.c
@@ -4,6 +4,7 @@
  *
  * Chip Rosenthal Covad Communications <chip@laserlink.net>
  *
+ * Licensed under GPLv2, see file LICENSE in this tarball for details.
  */
 
 #include "libbb.h"