*: add #include "command.h" where needed

Headers using struct cmd_token should directly include command.h so the
struct is actually defined.

Signed-off-by: David Lamparter <equinox@opensourcerouting.org>

lib/json.h

@@ -34,6 +34,8 @@
 #define json_object_to_json_string_ext(A, B) json_object_to_json_string (A)
 #endif
 
+#include "command.h"
+
 extern int use_json(const int argc, struct cmd_token *argv[]);
 extern void json_object_string_add(struct json_object* obj, const char *key,
                                    const char *s);

ospf6d/ospf6_route.h

@@ -22,6 +22,8 @@
 #ifndef OSPF6_ROUTE_H
 #define OSPF6_ROUTE_H
 
+#include "command.h"
+
 #define OSPF6_MULTI_PATH_LIMIT    4
 
 /* Debug option */