Cleanup the default Isolate's entry stack.

Cleanup the default Isolate's entry stack.

This adds an ASSERT that the entry_stack_ of the Isolate is
empty upon destruction. The default Isolate is an exception
here, as it may still contain an entry stack item upon
destruction.

R=jkummerow@chromium.org

Committed: https://code.google.com/p/v8/source/detail?r=15435

[Jakob Kummerow, 2013-07-02 07:15:02]

LGTM with comment.

https://codereview.chromium.org/18247004/diff/1/src/isolate.cc
File src/isolate.cc (right):

https://codereview.chromium.org/18247004/diff/1/src/isolate.cc#newcode1966
src/isolate.cc:1966: if (entry_stack_ != NULL) {
You don't need this condition; "delete" is safe to be called on NULL pointers.

[Benedikt Meurer, 2013-07-02 07:21:12]

Committed patchset #2 manually as r15435 (presubmit successful).