Add NDEBUG build

Change-Id: I81032fb43d6b4919bd264a644062dc31ae564427
diff --git a/src/class_linker.cc b/src/class_linker.cc
index 01e1119..92bb6d4 100644
--- a/src/class_linker.cc
+++ b/src/class_linker.cc
@@ -1408,14 +1408,14 @@
     if (c != '[' && c != 'L') {
       if (!seen_non_ref) {
         seen_non_ref = true;
-        DCHECK_EQ(klass->num_reference_ifields_, i);
+        DCHECK_EQ(klass->NumReferenceInstanceFields(), i);
       }
     } else {
       DCHECK(!seen_non_ref);
     }
   }
   if (!seen_non_ref) {
-    DCHECK(klass->NumInstanceFields(), klass->num_reference_ifields_);
+    DCHECK_EQ(klass->NumInstanceFields(), klass->NumReferenceInstanceFields());
   }
 #endif