fix response array conversion

[Mdhesari]

When deleting media, it always returns 0 event when the file is actually deleted, so I figured out the problem by tracing code and find out array conversion is not happening when retrieving media.

[unicodeveloper]

@Mdhesari not sure I get what you mean, there is a check on the next line for determining if the response is an array or not.

[brandon14]

@unicodeveloper I think what he is saying, is the API call to destroy doesn't return an array, but rather an ApiResponse object. So the check for is_array will always fail without an explicit cast to an array. thus always returning false even on a sucess.

[unicodeveloper]

@brandon14 thanks for clarifying. I understand better now.