sscanf with 0 arguments should be allowed when return value is passed to variables

[boesing]

In case that sscanf is being requested with 0 arguments (besides the format), sscanf returns the values instead of setting the arguments by reference.

For example:

[$integer, $string] = sscanf('1 GB', '%d%s');

Becomes:

$integer = 1;
$string = 'GB';

Therefore, 0 arguments are okay for sscanf.