fix compile error in doublearray code on ARM

TEST=Bots are green

Review URL: http://codereview.chromium.org/6881102

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@7676 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

src/arm/code-stubs-arm.cc

@@ -529,7 +529,7 @@ void FloatingPointHelper::ConvertIntToDouble(MacroAssembler* masm,
                                              Register dst2,
                                              Register scratch2,
                                              SwVfpRegister single_scratch) {
-  ASSERT(!smi_scratch.is(scratch2));
+  ASSERT(!int_scratch.is(scratch2));
 
   Label done;