Fix bug in r6930 and r6933...

src/arm/full-codegen-arm.cc

Index: src/arm/full-codegen-arm.cc
===================================================================
--- src/arm/full-codegen-arm.cc	(revision 6935)
+++ src/arm/full-codegen-arm.cc	(working copy)
@@ -880,10 +880,6 @@
   ForIn loop_statement(this, stmt);
   increment_loop_depth();
 
-  // Load null value as it is used several times below.
-  Register null_value = r5;
-  __ LoadRoot(null_value, Heap::kNullValueRootIndex);
-
   // Get the object to enumerate over. Both SpiderMonkey and JSC
   // ignore null and undefined in contrast to the specification; see
   // ECMA-262 section 12.6.4.
@@ -891,6 +887,8 @@
   __ LoadRoot(ip, Heap::kUndefinedValueRootIndex);
   __ cmp(r0, ip);
   __ b(eq, &exit);
+  Register null_value = r5;
+  __ LoadRoot(null_value, Heap::kNullValueRootIndex);
   __ cmp(r0, null_value);
   __ b(eq, &exit);