Patch by Luke Zarko.

Fix building with gdbjit=on

Issue 7101011: http://codereview.chromium.org/7101011

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@8161 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

src/gdb-jit.cc

@@ -1327,7 +1327,7 @@ static void UnregisterCodeEntry(JITCodeEntry* entry) {
 
 
 static JITCodeEntry* CreateELFObject(CodeDescription* desc) {
-  ZoneScope zone_scope(DELETE_ON_EXIT);
+  ZoneScope zone_scope(Isolate::Current(), DELETE_ON_EXIT);
 
   ELF elf;
   Writer w(&elf);