libyang CHANGE headers includes cleanup using include-what-you-use tool (#1098)

diff --git a/src/tree_data_helpers.c b/src/tree_data_helpers.c
index fef8010..798f238 100644
--- a/src/tree_data_helpers.c
+++ b/src/tree_data_helpers.c
@@ -11,14 +11,15 @@
  *
  *     https://opensource.org/licenses/BSD-3-Clause
  */
-#include "common.h"
 
 #include <assert.h>
+#include <stdint.h>
 #include <stdlib.h>
 
+#include "common.h"
+#include "context.h"
 #include "log.h"
-#include "dict.h"
-#include "plugins_types.h"
+#include "tree.h"
 #include "tree_data.h"
 #include "tree_schema.h"