py: Move to guarded includes, everywhere in py/ core.
Addresses issue #1022.
diff --git a/py/objlist.h b/py/objlist.h
index 05a4c8d..443ede5 100644
--- a/py/objlist.h
+++ b/py/objlist.h
@@ -23,6 +23,10 @@
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
+#ifndef __MICROPY_INCLUDED_PY_OBJLIST_H__
+#define __MICROPY_INCLUDED_PY_OBJLIST_H__
+
+#include "py/obj.h"
typedef struct _mp_obj_list_t {
mp_obj_base_t base;
@@ -30,3 +34,5 @@
mp_uint_t len;
mp_obj_t *items;
} mp_obj_list_t;
+
+#endif // __MICROPY_INCLUDED_PY_OBJLIST_H__