Fix heap_spray method's return value type

[wchen-r7]

The heap_spray method returns a string after calling obfuscate, but it should be returning Rex::Exploitation::ObfuscateJS instead.

To test, you can do this:

o = ::Rex::Exploitation::ObfuscateJS.new(%Q|var someVar = "hello, world"; alert(someVar)|)

Inspect the object:

o.class

And that should return Rex::Exploitation::ObfuscateJS.

If you do this:

"#{o}"

It should return the JavaScript string:

"alert(\"hello, world\")"

And then if you call obfuscate:

o.obfuscate('Symbols' => {'Variables'=>['someVar']}, 'Strings' => true)

It should give you the obfuscated JavaScript

And then if you call the #sym method for the variable someVar

o.sym('someVar')

It should tell you the obfuscated name of someVar

[bcook-r7]

Looks good, string interpolation, etc. work as expected now.

[wvu]

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