Fix Win64 build isolate problem

R=ager@chromium.org
BUG=none
TEST=none

Review URL: http://codereview.chromium.org/6764014

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@7471 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

src/x64/codegen-x64.cc

@@ -8755,7 +8755,7 @@ ModuloFunction CreateModuloFunction() {
                                                  &actual_size,
                                                  true));
   CHECK(buffer);
-  Assembler masm(buffer, static_cast<int>(actual_size));
+  Assembler masm(Isolate::Current(), buffer, static_cast<int>(actual_size));
   // Generated code is put into a fixed, unmovable, buffer, and not into
   // the V8 heap. We can't, and don't, refer to any relocatable addresses
   // (e.g. the JavaScript nan-object).