[bugfix] min and max bug with iteratee and infinities fixed. Fixes #2688

[bayneri]

'is first element min/max borders (infinities)' check simplified. these changes also fixed the bug between iteratee and Infinity/-Infinity.

#2688

[bayneri]

Can anyone explain these errors?

zip
Died on test #5 at /home/travis/build/jashkenas/underscore/test/arrays.js:254:9
at Object. (/home/travis/build/jashkenas/underscore/test/arrays.js:567:2)
at Module._compile (module.js:449:26)
at Object.Module._extensions..js (module.js:467:10)
at Module.load (module.js:356:32)
at Function.Module._load (module.js:312:12)
at Module.require (module.js:362:17): Cannot read property 'length' of null
null != undefined
max
can handle null/undefined
-Infinity != null
min
can handle null/undefined
null != Infinity

[sakarisson]

Does the error come from the fact that you use != instead of !==?

[bayneri]

@sakarisson i don't think so but i'll try that