refactor: variable declaration according to length

Signed-off-by: Gururaj Gurram <143020143+gururaj1512@users.noreply.github.com>

Author: gururaj1512

lib/node_modules/@stdlib/plot/vega/compare/ctor/lib/order/set.js

@@ -56,8 +56,8 @@ var debug = logger( 'vega:compare:set:'+prop.name );
 * @returns {void}
 */
 function set( value ) {
-	var nfields;
 	var isSigRef;
+	var nfields;
 	var isStr;
 	var opts;
 	var i;