Fix build.

TBR=vitalyr@chromium.org

Review URL: http://codereview.chromium.org/6688032

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@7260 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

src/top.h

@@ -562,7 +562,7 @@ class Top {
 
     ~ExceptionScope() {
       Top::set_catcher(catcher_);
-      Top::set_external_caught_exception(external_caught_exception);
+      Top::set_external_caught_exception(external_caught_exception_);
       Top::set_pending_exception(*pending_exception_);
     }