Fixed some warnings

diff --git a/boot/boot.h b/boot/boot.h
index 4774a7c1489208828a5a09d92a4abaf9e1a44c06..8148f20dc305953b48048cf191f8237017b43628 100755 (executable)
--- a/boot/boot.h
+++ b/boot/boot.h
@@ -162,6 +162,7 @@ EXTERN environment *env;    /* Lists the environment. */
 
 char *b_value(char *name);     /* Get/set the value of a variable. */
 int b_setvar(int flags, char *name, char *value);
+void b_unset(char *name);
 
 void parse_code(char *code);   /* Parse boot monitor commands. */