tests: Clean up includes

Clean up includes so that osdep.h is included first and headers
which it implies are not included manually.

This commit was created with scripts/clean-includes.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Eric Blake <eblake@redhat.com>
Tested-by: Eric Blake <eblake@redhat.com>
diff --git a/tests/check-qdict.c b/tests/check-qdict.c
index a136f2a..a43056c 100644
--- a/tests/check-qdict.c
+++ b/tests/check-qdict.c
@@ -9,6 +9,7 @@
  * This work is licensed under the terms of the GNU LGPL, version 2.1 or later.
  * See the COPYING.LIB file in the top-level directory.
  */
+#include "qemu/osdep.h"
 #include <glib.h>
 
 #include "qapi/qmp/qint.h"