Rest parameters (and default parameters?) aren't autodetected for function expressions

[hegemonic]

For the following example, we autodetect that vals is a repeatable parameter:

/**
 * Concatenate a series of values.
 * @param {*} vals - The values to concatenate.
 */
function concat(...vals) { return vals.join(''); }

However, autodetection fails for the following examples, because the function expressions don't have a doclet associated with them (it's tied to the variable declaration instead);

/**
 * Concatenate a series of values.
 * @param {*} vals - The values to concatenate.
 */
var concat = function(...vals) { return vals.join(''); };

/**
 * Concatenate a series of values.
 * @param {*} vals - The values to concatenate.
 */
var concat = (...vals) => vals.join('');

I suspect (but haven't confirmed) that default parameters have the same issue.

[hegemonic]

Fixed on master. The fix will be included in JSDoc 3.5.0.