fix missing includes

cutest

@@ -1 +1 @@
-Subproject commit 8246a55111430b3f409a1d56aefd456f6b7ada4e
+Subproject commit 0b718dde0939afdd1f424f5030fc1621d38ba6db

src/json_test.c

@@ -2,15 +2,18 @@
 #include <CuTest.h>
 #include <stream.h>
 #include <memstream.h>
-#include "json.h"
-#include "tests.h"
 
+#include <kernel/types.h>
 #include <kernel/region.h>
 #include <kernel/terrain.h>
 
-#include <cJSON.h>
+#include "json.h"
+#include "tests.h"
 
+#include <cJSON.h>
 #include <stdlib.h>
+#include <string.h>
+#include <ctype.h>
 
 static char *strip(char *str) {
     char *s = str, *b = str, *e = str;