Make PopSirt inlinable, pass self to SirtRef.

Change-Id: Ieb91526b1cb1f8644ceb3c5b99649f658f43bbc1
diff --git a/src/heap_test.cc b/src/heap_test.cc
index d846db5..881a765 100644
--- a/src/heap_test.cc
+++ b/src/heap_test.cc
@@ -15,6 +15,7 @@
  */
 
 #include "common_test.h"
+#include "sirt_ref.h"
 
 namespace art {
 
@@ -38,7 +39,7 @@
 
     Class* c = class_linker_->FindSystemClass("[Ljava/lang/Object;");
     for (size_t i = 0; i < 1024; ++i) {
-      SirtRef<ObjectArray<Object> > array(ObjectArray<Object>::Alloc(c, 2048));
+      SirtRef<ObjectArray<Object> > array(soa.Self(), ObjectArray<Object>::Alloc(c, 2048));
       for (size_t j = 0; j < 2048; ++j) {
         array->Set(j, String::AllocFromModifiedUtf8("hello, world!"));
       }