Response headers with empty values should return empty string, not null

[jamshid]

If the response to a $http request contains a header but its value is empty, the value should be an empty string, not "null". Right?

I get foo == null even though X-Foo-Meta is in the response headers.

$http.get("/validate")
   .success(function(respBody, status, respHeaders, config) {
   $scope.foo = respHeaders('X-Foo-Meta');
   // it seems foo should be "", not null, here
   ...

The bug seems to be in angular.js v1.2.17

function headersGetter(headers) {
      ...
      return headersObj[lowercase(name)] || null;

[caitp]

The empty string is the only case where this would happen. I'm not sure that it's common for headers to have empty value fields (I'm not actually sure if it's even legal in HTTP, to be honest --- don't feel like studying poorly written technical documents regarding this at the moment!)

However, it should be trivial to make this work, if you want to send a PR for this. I think it would be small and easy to check in

[jamshid]

Hi @caitp is there anything more I need to do to get this minor change in?