Make Tor compile with --disable-memory-sentinels again

src/lib/memarea/.may_include

@@ -1,6 +1,7 @@
 orconfig.h
 lib/arch/*.h
 lib/cc/*.h
+lib/container/*.h
 lib/log/*.h
 lib/malloc/*.h
 lib/memarea/*.h

src/lib/memarea/memarea.c

@@ -14,8 +14,9 @@
 #include <stdlib.h>
 #include <string.h>
 
-#include "lib/cc/torint.h"
 #include "lib/arch/bytes.h"
+#include "lib/cc/torint.h"
+#include "lib/container/smartlist.h"
 #include "lib/log/torlog.h"
 #include "lib/log/util_bug.h"
 #include "lib/malloc/util_malloc.h"