fix($http): question mark added to URL if params are empty

[dragosrususv]

STEPS

1. Create a request using $http service and provide: a) an URL without any params nor question mark b) an empty params set {} (people fallback to some sort of default to avoid errors)

ACTUAL: Notice in developer tools the URL has actually a question mark in it

EXPECTED: As long as we don't have an iterable array/object with a length bigger or equal to 1, we should not affect the URL.

Source code: https://github.com/angular/angular.js/blob/master/src/ng/http.js#L1013-L1029 (please note the first line from buildURL: "if (!params) return url;") ).

originally noticed by Marius Radvan.

[bramslob]

there is already (at least one..) a pull request for that: #6342

[dragosrususv]

Sorry, missed that, please CLOSE this one.

[bramslob]

since you opened it, you could close it. Or wait for the devs.

[tbosch]

Closing as requested...