chore: suggestions from code review

Author: aayush0325

lib/node_modules/@stdlib/array/fixed-endian-factory/lib/main.js

@@ -647,6 +647,7 @@ function factory( dtype ) { // eslint-disable-line max-lines-per-function, stdli
 	/**
 	* Returns the index of the last element in an array for which a predicate function returns a truthy value.
 	*
+	* @private
 	* @name findLastIndex
 	* @memberof TypedArray.prototype
 	* @type {Function}
@@ -667,8 +668,7 @@ function factory( dtype ) { // eslint-disable-line max-lines-per-function, stdli
 			throw new TypeError( format( 'invalid argument. First argument must be a function. Value: `%s`.', predicate ) );
 		}
 		buf = this._buffer;
-		len = this._length;
-		for ( i = len - 1; i >= 0; i-- ) {
+		for ( i = this._length - 1; i >= 0; i-- ) {
 			if ( predicate.call( thisArg, buf[ GETTER ]( i * BYTES_PER_ELEMENT, this._isLE ), i, this ) ) {
 				return i;
 			}