Fix boxing; my invoke stub changes broke this.

Change-Id: If24ad7231de956d1f81bf65084508bcad97537db
diff --git a/src/reflection.cc b/src/reflection.cc
index a90af0e..993a939 100644
--- a/src/reflection.cc
+++ b/src/reflection.cc
@@ -270,8 +270,7 @@
 
   Thread* self = Thread::Current();
   ScopedThreadStateChange tsc(self, Thread::kRunnable);
-  JValue args[1];
-  args[0].j = 0;
+  JValue args[1] = { value };
   m->Invoke(self, NULL, args, &value);
 }