Since we already use a local json_bool type, replace any stdbool.h usage with
 that, since not all environments actually have a stdbool.h to use.
diff --git a/json_object_iterator.c b/json_object_iterator.c
index 7191b53..7066649 100644
--- a/json_object_iterator.c
+++ b/json_object_iterator.c
@@ -16,7 +16,6 @@
 */
 
 #include <stddef.h>
-#include <stdbool.h>
 
 #include "json.h"
 #include "json_object_private.h"
@@ -139,7 +138,7 @@
 /**
  * ****************************************************************************
  */
-bool
+json_bool
 json_object_iter_equal(const struct json_object_iterator* iter1,
                        const struct json_object_iterator* iter2)
 {