control: fix check if argument is number

Number.isNaN("colour") returns false so things break.  +"colour" is
NaN so Number.isNaN(+"colour") returns true and things work.  Style
checker requires that +x be spelled Number(x).

Signed-off-by: Peter A. Bigot <[email protected]>

Author: pabigot

lib/control.js

@@ -7,7 +7,7 @@ function parseConfig(config, options) {
 		c.badArgument(options);
 	}
 
-	if (Number.isNaN(options.protocolVersion)) {
+	if (Number.isNaN(Number(options.protocolVersion))) {
 		c.badArgument(options);
 	}
 
@@ -66,7 +66,7 @@ async function set(config, options) {
 	}
 
 	if (!options.rawValue) {
-		if (!Number.isNaN(options.set)) {
+		if (!Number.isNaN(Number(options.set))) {
 			options.set = Number.parseInt(options.set, 10);
 		} else if (options.set.toLowerCase() === 'true') {
 			options.set = true;