refactor: change ordering of checks to reflect parameter order

PR-URL: #11884
Reviewed-by: Athan Reines <kgryte@gmail.com>

Author: Planeshifter

lib/node_modules/@stdlib/stats/base/dists/gumbel/quantile/lib/main.js

@@ -73,9 +73,9 @@ var ln = require( '@stdlib/math/base/special/ln' );
 */
 function quantile( p, mu, beta ) {
 	if (
+		isnan( p ) ||
 		isnan( mu ) ||
 		isnan( beta ) ||
-		isnan( p ) ||
 		beta <= 0.0 ||
 		p < 0.0 ||
 		p > 1.0