Don't mangle the original objects when deep === true

[papandreou]

Test case:

var cjson = require('cjson');
var one = {a: {b: 1}},
    two = {a: {b: 2}};

console.log(cjson.extend(true, {}, one, two));

Output:

{ a: { b: 2 }}

... which is correct, but one has also been changed:

console.log(one);

Output:

{ a: { b: 2 }}

[papandreou]

@kof Ping?

[kof]

oh sorry forgot this one, will take a look tomorrow!

[kof]

Thanks for you pull, couldn't merge it because of its quality, but the bug is fixed now and tests are added.

[papandreou]

Thanks for fixing it, but please tell me what you mean by "because of its quality"?

[kof]

you are generating a function inside of the "for" loop, it is much more code than needed, lack of tests.