ART: Use array-inl.h in reference_table_test

The test allocates arrays, which is an inline definition.

Change-Id: I1423c5419949d7c352ed0e614d4f9c5920831deb
diff --git a/runtime/reference_table_test.cc b/runtime/reference_table_test.cc
index d2877f9..db98e1f 100644
--- a/runtime/reference_table_test.cc
+++ b/runtime/reference_table_test.cc
@@ -17,7 +17,7 @@
 #include "reference_table.h"
 
 #include "common_runtime_test.h"
-#include "mirror/array.h"
+#include "mirror/array-inl.h"
 #include "mirror/string.h"
 #include "scoped_thread_state_change.h"
 #include "thread-inl.h"