fix($httpBackend): Fix for IE9 AJAX request aborting error.

[lucipacurar]

Aborting AJAX requests in IE9 makes the XHR object's properties inaccessible and throws the following error:

SCRIPT575: Could not complete the operation due to error c00c023f.

[mary-poppins]

Thanks for the PR!

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Thanks again for your help!

[lucipacurar]

Running "jasmine_node" task
Warning: Cannot find module 'mkdirp'� Use --force to continue.
Aborted due to warnings.
    >> 
    Warning: Task "parallel:travis" failed.� Use --force to continue.
Aborted due to warnings.

Did I break this?

[gchurchley]

I am seeing a problem that appears to be the same issue. See Issue #4585

I have created a single html page that runs on IE10, Chrome, and Firefox, and clearly shows the error on IE9:
http://www.apxproto.com/api/ngPost.htm

Perhaps you could use that page for testing the fix?

[lucipacurar]

The fix works just fine on my local setup. As far as I can see the Travis CI tests aren't failing, it looks like a nodejs issue.

[lucipacurar]

Can somebody review this commit? This is an important issue for people using AngularJS on IE.

LE: Pull request #4940 fixes the same issue. I believe my PR can be closed then.

[petebacondarwin]

@lucassp - thanks for the PR. The failing tests were just travis being flaky. I agree though that this is superceded by #4940.